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Discussion Starter · #1 · (Edited)
Since I have gotten many PM’s regarding how to do the navi retrofit I will post up a instructional DIY….but sadly I have no pictures since this was extremely frustrating to do and the last thing I wanted to do was pick up a camera and take pictures every time I removed another screw, lol. This will be for the plug and play install with all Honda parts. I know there is another way to do this (that is much easier from what I have heard) that requires the modification of the existing harness and adding wires, but I do not know how to do this and did not want to splice into any wiring. The only part that I have not done, is the XM radio install, as it requires a few hundred dollars of more parts and to drill a hole in the roof. It’s not worth it to me, unless you REALLY want XM radio.

If you do buy the navi brand new, It will not work correctly unless you plug in the XM antenna to the back of the radio on the first boot up. For those of you that dont plan on getting the XM parts, The best way around this is to make friends with some one that has a civic with navication and just swap yours navi for theirs and let it boot up. It is only the initial boot up that needs the XM signal, one it is up and running you can uninstall and replace teheir navigation. That overrides the XM signal problem.

I did mine in a few steps since the dealer had to order certain parts, and I recommend trying it this way so it does not become too overwhelming of a job. I broke it down into 3 parts:
1. navigation unit install
2. steering wheel speak/back button install
3. microphone install

First, I’ll list parts and all compatible navigation systems for different trims. The EX and SI can do this without any problems. But the LX might be a little different and I can’t guarantee it will work. The DX, I have no idea about. All parts can be found at your local Honda dealer, including the navi unit, but I recommend finding one on eBay or at a junkyard since they will cost $2500+ brand new.

2006 SI coupe w/o NAVI
1. OEM navi 39540-sva-a10za
2006-2007 EX coupe navi will work.
2007+ CRV navi will work
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel 77250-sna-a01za $24.64
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-sva-a30 $284.24
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional(re-use old)
11. Microphone/sunroof harness 32156-sva-a10 $58.81
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2007 SI coupe w/o NAVI
1. OEM navi 39540-sva-a10za
2006-2007 EX coupe navi will work.
2007+ CRV navi will work
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel 77250-sna-a01za $24.64
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-svb-a01 $284.24
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional(re-use old)
11. Microphone/sunroof harness 32156-sva-a11 $58.81
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2007 SI sedan w/o NAVI
1. OEM navi 39540-sva-a50za
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel 77250-sna-a01za $24.64
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-snx-a30 $205.26
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional or re-use old
11. Microphone/sunroof harness 32156-snx-a00 $47.56
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2006 EX coupe w/o NAVI
1. oem navi (gun metallic) 39540-sva-a00za
oem navi (taupe gun metallic) 39540-sva-a00zb
2006-2007 SI coupe navi will also work
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel (gun metallic) 77250-sna-a01za $23.50
(taupe gun mettalic) 77250-sna-a01zb $23.50
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-sva-a30 (auto trans) $268.93
32117-sva-a30 (5spd) $268.93
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional(re-use old)
11. Microphone/sunroof harness 32156-sva-a11 $58.81
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2006 EX sedan w/o NAVI
1. oem navi (gun metallic) 39543-sna-A01za
oem navi (taupe gun metallic) 39543-sna-a01zb

2007 EX coupe w/o NAVI (LX coupe should use the same parts)
1. oem navi (gun metallic) 39540-sva-a00za
oem navi (taupe gun metallic) 39540-sva-a00zb
2006-2007 SI coupe navi will also work
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel (gun metallic) 77250-sna-a01za $23.50
(taupe gun mettalic) 77250-sna-a01zb $23.50
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-sva-a31 (auto trans) $198.31
32117-sva-a30 (5spd) $198.31
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional(re-use old)
11. Microphone/sunroof harness 32156-sva-a11 $58.81
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2007 EX sedan w/o NAVI (LX sedan should use the same parts)
1. oem navi (gun metallic) 39543-sna-a01za
oem navi (taupe gun metallic) 39543-sna-a01zb

i have found that www.hondaautomotiveparts.com has the cheapest prices for parts, but www.hondapartsdeals.com and www.collegehillshonda.com also have all the parts.

Now…for the instructions for the navi install (not including the steering wheel buttons or microphone). I recommend taking pictures along the way as it might help you remember how things were and how to put them back together.
Give yourself at least 1 day for this install. If you have basic knowledge of car audio install and how to disassemble a cars interior, it is easy, but time consuming. Most of the panels have clips that pop on and off and a few screws. Just take your time and as you look/pull on parts be gentle and remove any screws that you think might be attached to the panels.
Off the top of my head, I remember having to remove the drivers side dash panel, radio dash panel, tachometer, trim around the speedometer, speedometer, glover box, center console (can be loosened and pulled back, but is easier if completely removed), loosen the passenger side airbag (so that the dash panel can be “lifted” out of the way), both tweeter/grills must be popped out, trim around the hood pull release and the fuse block(take pictures of the back to remember what plugs in where) that is underneath the steering wheel by the door must be unplugged and removed completely. This should all go very easy, if you having trouble already, this is not the DIY for you.
Next, I started behind where the radio would be and pulled/pried off all clips that are holding the harness in place (a flat screwdriver works well for this, most of the clips just broke and then I was easily able to pull off anything left with pliers). There are also many ground bolts along the way that need to be taken off. Maybe try and part them as you go so that you remember where it was grounded. As I got more of the harness loose I would just follow it and take off and plugs that is a part of it. The harness stretches from under the steering wheel, by the fuse box, all the way to the amplifier, speedometer, and the passenger side airbag. Just take your time and it should come out with little force once all the clips are broken. I found it easiest to loosen everything and full it all out from above the drivers’ side foot well.

I used a can of silicone spray at parts of the harness that were hard to pull out due to tight spaces. This helped a lot, and you can also use this trick when trying to route the new harness in. The most difficult part of the harness to remove is under the dash where the speedometer is. It is very tight and the plugs are actually larger than the area that they have to fit into. So, I cut the harness and pulled it out rather than trying to slide it through the space.

Once completely removed, take a few minutes to admire your hard work and go inside to sit in a comfortable chair (since chances are you back most likely hurt from having o be a contortionist and getting under the dash, lol) and do the easiest part of switching all the a/c controls and vents from the OEM radio surround onto the new radio surround along with mounting the navi unit to it. Do not install the dash part yet.

Next attach the gps antennae to the dash frame to the right of where the speedometer would be; I think it was just 2 screws and a guide pin. Once in place, just route the wire and clip it in place so that it ends up behind the navi unit.

Now, lay out the new harness and bend it around to try and make it a little flexible. All plugs are mostly different sizes and can plug in only 1 location, so it cant really be wired in wrong. Start in the driver side foot well (to the right of the steering wheel) and pull your wires from under the dash, behind the radio area, and completely across the car. The first plug you should be plugging in is the passenger side tweeter (best way to get the wire up by the tweeter is to use a belt clothes hanger/wire and snake it through, tape the plug onto it and pull it back up through the dash) working your way back to the center of the dash (where the radio would be). Be sure to connect the airbag, amplifier and anything else, including the plug that feeds power to the door for the speakers and window. Clip in the harness as it was when you removed it and also remember to bolt it to the ground locations. The passenger side of the car is the easy part, once done start under the steering wheel and try and route the wires as close as possible to the OEM location. Do not pull on the wires to hard as to not cut/pull wires out of the back of the plugs. Remember, take your time and think ahead as to not loop any wires over/under one another so that they will not be “held back” by something,

I deviated from the exact OEM location and wire tire it up in some spots (especially under the speedometer) because it is nearly impossible to squeeze the plugs through some of the spaces. But use the same idea as the passenger side and start from the right and work your way to the left (where the fuse box it).

This side of the car you’re pretty much on your own besides what I already told you, because by this point I was frustrated probably as you will be and I just wanted to get it finished. But don’t forget the white and blue plugs that plug into the drivers side door…they were a ***** and for a long time I couldn’t even remember where they went until I was listening to my radio and had no sound coming out of the door and then realized that the door and no power functions.

Next, as “cleanly” ass possible plug the wires into back of the fuse box (using your pictures as reference) and bolt it back in place

At this point you should be ready to reinstall the dash and all removed parts, including the navi unit. Plug it all in and make sure it works. Clean your car and enjoy!

I am not going to do a write up such as that for the microphone/sunroof harness, simply because it is the same idea, as remove and reinstall the harness, but much easier. But, in order to do this the headliner must be loosened and “half” dropped to get to the wiring. It simply “unhooks from around the sunroof, un-velcros, and to remove the trim around the outside of the headliner, hit the upper 6” of it with a rubber mallet to break the clips that are under it(must be replaced upon reinstallation). the trim should then be lose and should just pop off. at this point the headliner is ready to by pleed off, but it only needs to come down far enough to fit your carm in and see what you doing) Be sure to disconnect your battery, as there are airbag around it and I wouldn’t want to be hitting it with a mallet and it go off. The also, the dome/map lights need to be removed. To do this, pop off the clear cover with a screwdriver and unscrew the assembly from the roof (the microphone mounts in the map light by the courtesy light)

The steering wheel controls are all bolt on and easily accessible after the front garnish is removed. The airbag can be unbolted and it is all very easy. Just once again, make sure the battery is disconnected. To replace the rear garnish of the steering wheel you will need to remove the steering wheel, I never did this, but rather use the dremel to modify the one that was on my car to allow for the install of the talk/back buttons. This should all be very easy if you can do the first part of the install.

I will update this as I have time and remember any small things, but if anyone has any suggestions, feel free to tell me and I will incorporate them into this DIY. the part numbers for the EX and LX models i am stillwroking on and will update/correct as soon as i have time.
 

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Anyone can help me? After connect the Microphone/sunroof harness my gps have not more signal... :xyxnervou
I have a civic sedan 2007 SI

thanks
 

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Discussion Starter · #8 ·
Anyone can help me? After connect the Microphone/sunroof harness my gps have not more signal... :xyxnervou
I have a civic sedan 2007 SI

thanks

your GPS signal is not related to your sunroof/mic harness. you could actually even use the navi without the mic harness plugged in.

maybe you disconnected a plug by accident? double check your connections.
 

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Did you get a slammin deal on that gps nav? Because compared to the units I've seen in some high end stores, for the same money you can get SOME WAY BETTER SH!T.. yowsah!

Good job on taking on the mod though, nice..
 

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daaaaaaaayum

i could never do that to my brand new baby

strip it to the coreness of the awesomeness?!?

heeeell to tha no!

but good job looks like you know what u doin
 

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I would like to add that when me and my friend did his 06 si we pulled the dash, if I had to guess when honda put the dash in the car as one unit.... dash panel the metal bar under it wiring harness and all, we pulled it all out and it made running the harness easy.

there are 2 12mm bolts on the door jamb on the pass. side and 3 on the drivers side, one has to be taken out from the outside of the car, then just unplug the power to the doors, mark and remove the steering colum, unplug the harnesses to the body from the fuse panel. then pop out the center console and pull the abs wires and such

when its out, remove the dash cover and go to town!
 

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Nighthawksi, I have a quick question for you. Please PM me, I really really need some help with this. Thank you very much for your time.
 

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Since I have gotten many PM’s regarding how to do the navi retrofit I will post up a instructional DIY….but sadly I have no pictures since this was extremely frustrating to do and the last thing I wanted to do was pick up a camera and take pictures every time I removed another screw, lol. This will be for the plug and play install with all Honda parts. I know there is another way to do this (that is much easier from what I have heard) that requires the modification of the existing harness and adding wires, but I do not know how to do this and did not want to splice into any wiring. The only part that I have not done, is the XM radio install, as it requires a few hundred dollars of more parts and to drill a hole in the roof. It’s not worth it to me, unless you REALLY want XM radio.

If you do buy the navi brand new, It will not work correctly unless you plug in the XM antenna to the back of the radio on the first boot up. For those of you that dont plan on getting the XM parts, The best way around this is to make friends with some one that has a civic with navication and just swap yours navi for theirs and let it boot up. It is only the initial boot up that needs the XM signal, one it is up and running you can uninstall and replace teheir navigation. That overrides the XM signal problem.

I did mine in a few steps since the dealer had to order certain parts, and I recommend trying it this way so it does not become too overwhelming of a job. I broke it down into 3 parts:
1. navigation unit install
2. steering wheel speak/back button install
3. microphone install

First, I’ll list parts and all compatible navigation systems for different trims. The EX and SI can do this without any problems. But the LX might be a little different and I can’t guarantee it will work. The DX, I have no idea about. All parts can be found at your local Honda dealer, including the navi unit, but I recommend finding one on eBay or at a junkyard since they will cost $2500+ brand new.

2006 SI coupe w/o NAVI
1. OEM navi 39540-sva-a10za
2006-2007 EX coupe navi will work.
2007+ CRV navi will work
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel 77250-sna-a01za $24.64
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-sva-a30 $284.24
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional(re-use old)
11. Microphone/sunroof harness 32156-sva-a10 $58.81
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2007 SI coupe w/o NAVI
1. OEM navi 39540-sva-a10za
2006-2007 EX coupe navi will work.
2007+ CRV navi will work
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel 77250-sna-a01za $24.64
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-svb-a01 $284.24
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional(re-use old)
11. Microphone/sunroof harness 32156-sva-a11 $58.81
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2007 SI sedan w/o NAVI
1. OEM navi 39540-sva-a50za
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel 77250-sna-a01za $24.64
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-snx-a30 $205.26
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional or re-use old
11. Microphone/sunroof harness 32156-snx-a00 $47.56
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2006 EX coupe w/o NAVI
1. oem navi (gun metallic) 39540-sva-a00za
oem navi (taupe gun metallic) 39540-sva-a00zb
2006-2007 SI coupe navi will also work
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel (gun metallic) 77250-sna-a01za $23.50
(taupe gun mettalic) 77250-sna-a01zb $23.50
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-sva-a30 (auto trans) $268.93
32117-sva-a30 (5spd) $268.93
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional(re-use old)
11. Microphone/sunroof harness 32156-sva-a11 $58.81
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2006 EX sedan w/o NAVI
1. oem navi (gun metallic) 39543-sna-A01za
oem navi (taupe gun metallic) 39543-sna-a01zb

2007 EX coupe w/o NAVI (LX coupe should use the same parts)
1. oem navi (gun metallic) 39540-sva-a00za
oem navi (taupe gun metallic) 39540-sva-a00zb
2006-2007 SI coupe navi will also work
2. GPS ant. Assembly 39835-sna-a01 $23.62
3. Navi bracket (drivers side) 77256-sna-a00 $1.72
4. Navi bracket (pass. Side) 77255-sna-a00 $1.72
5. Navi dash panel (gun metallic) 77250-sna-a01za $23.50
(taupe gun mettalic) 77250-sna-a01zb $23.50
6. Bracket – navi bolt 91551-se0-003 $0.78 (8)
7. Bracket/dash panel bolt 93913-14420 $0.32 (4)
8. Bracket bottom bolt 90133-sm4-003 $2.25 (2)
9. Instrument panel harness 32117-sva-a31 (auto trans) $198.31
32117-sva-a30 (5spd) $198.31
10. Harness ground bolts 90148-se0-003 $2.91 (7) – optional(re-use old)
11. Microphone/sunroof harness 32156-sva-a11 $58.81
12. Navi microphone 39182-sna-003 $69.28
13. Microphone screw 35151-sna-003 $0.08
14. Rear steering wheel garnish 78518-sva-a31za $38.86
15. Front steering wheel garnish 78540-sva-a31za $41.66
16. talk/back switch bracket 78517-sva-a31 $12.64
17. talk/back bracket screw 93913-24420 $0.32
18. talk/back switch 35890-sva-a01 $40.91
19. Switch screw 90173-sva-a02 $5.85
20. Switch screw 90178-sna-a81 $5.94 (2)
21. Cruise/audio buttons 36770-sva-a22 $72.10

2007 EX sedan w/o NAVI (LX sedan should use the same parts)
1. oem navi (gun metallic) 39543-sna-a01za
oem navi (taupe gun metallic) 39543-sna-a01zb

i have found that Majestic Honda - The Internet's #1 Honda Automotive Parts Store has the cheapest prices for parts, but Honda Parts at HondaPartsDeals.com: Honda Accessory, Honda Car Parts, Honda Auto Parts, Honda Accord Parts and Genuine Honda Accessories at Discount Prices - Honda Product Information, Videos and News also have all the parts.

Now…for the instructions for the navi install (not including the steering wheel buttons or microphone). I recommend taking pictures along the way as it might help you remember how things were and how to put them back together.
Give yourself at least 1 day for this install. If you have basic knowledge of car audio install and how to disassemble a cars interior, it is easy, but time consuming. Most of the panels have clips that pop on and off and a few screws. Just take your time and as you look/pull on parts be gentle and remove any screws that you think might be attached to the panels.
Off the top of my head, I remember having to remove the drivers side dash panel, radio dash panel, tachometer, trim around the speedometer, speedometer, glover box, center console (can be loosened and pulled back, but is easier if completely removed), loosen the passenger side airbag (so that the dash panel can be “lifted” out of the way), both tweeter/grills must be popped out, trim around the hood pull release and the fuse block(take pictures of the back to remember what plugs in where) that is underneath the steering wheel by the door must be unplugged and removed completely. This should all go very easy, if you having trouble already, this is not the DIY for you.
Next, I started behind where the radio would be and pulled/pried off all clips that are holding the harness in place (a flat screwdriver works well for this, most of the clips just broke and then I was easily able to pull off anything left with pliers). There are also many ground bolts along the way that need to be taken off. Maybe try and part them as you go so that you remember where it was grounded. As I got more of the harness loose I would just follow it and take off and plugs that is a part of it. The harness stretches from under the steering wheel, by the fuse box, all the way to the amplifier, speedometer, and the passenger side airbag. Just take your time and it should come out with little force once all the clips are broken. I found it easiest to loosen everything and full it all out from above the drivers’ side foot well.

I used a can of silicone spray at parts of the harness that were hard to pull out due to tight spaces. This helped a lot, and you can also use this trick when trying to route the new harness in. The most difficult part of the harness to remove is under the dash where the speedometer is. It is very tight and the plugs are actually larger than the area that they have to fit into. So, I cut the harness and pulled it out rather than trying to slide it through the space.

Once completely removed, take a few minutes to admire your hard work and go inside to sit in a comfortable chair (since chances are you back most likely hurt from having o be a contortionist and getting under the dash, lol) and do the easiest part of switching all the a/c controls and vents from the OEM radio surround onto the new radio surround along with mounting the navi unit to it. Do not install the dash part yet.

Next attach the gps antennae to the dash frame to the right of where the speedometer would be; I think it was just 2 screws and a guide pin. Once in place, just route the wire and clip it in place so that it ends up behind the navi unit.

Now, lay out the new harness and bend it around to try and make it a little flexible. All plugs are mostly different sizes and can plug in only 1 location, so it cant really be wired in wrong. Start in the driver side foot well (to the right of the steering wheel) and pull your wires from under the dash, behind the radio area, and completely across the car. The first plug you should be plugging in is the passenger side tweeter (best way to get the wire up by the tweeter is to use a belt clothes hanger/wire and snake it through, tape the plug onto it and pull it back up through the dash) working your way back to the center of the dash (where the radio would be). Be sure to connect the airbag, amplifier and anything else, including the plug that feeds power to the door for the speakers and window. Clip in the harness as it was when you removed it and also remember to bolt it to the ground locations. The passenger side of the car is the easy part, once done start under the steering wheel and try and route the wires as close as possible to the OEM location. Do not pull on the wires to hard as to not cut/pull wires out of the back of the plugs. Remember, take your time and think ahead as to not loop any wires over/under one another so that they will not be “held back” by something,

I deviated from the exact OEM location and wire tire it up in some spots (especially under the speedometer) because it is nearly impossible to squeeze the plugs through some of the spaces. But use the same idea as the passenger side and start from the right and work your way to the left (where the fuse box it).

This side of the car you’re pretty much on your own besides what I already told you, because by this point I was frustrated probably as you will be and I just wanted to get it finished. But don’t forget the white and blue plugs that plug into the drivers side door…they were a ***** and for a long time I couldn’t even remember where they went until I was listening to my radio and had no sound coming out of the door and then realized that the door and no power functions.

Next, as “cleanly” ass possible plug the wires into back of the fuse box (using your pictures as reference) and bolt it back in place

At this point you should be ready to reinstall the dash and all removed parts, including the navi unit. Plug it all in and make sure it works. Clean your car and enjoy!

I am not going to do a write up such as that for the microphone/sunroof harness, simply because it is the same idea, as remove and reinstall the harness, but much easier. But, in order to do this the headliner must be loosened and “half” dropped to get to the wiring. It simply “unhooks from around the sunroof, un-velcros, and to remove the trim around the outside of the headliner, hit the upper 6” of it with a rubber mallet to break the clips that are under it(must be replaced upon reinstallation). the trim should then be lose and should just pop off. at this point the headliner is ready to by pleed off, but it only needs to come down far enough to fit your carm in and see what you doing) Be sure to disconnect your battery, as there are airbag around it and I wouldn’t want to be hitting it with a mallet and it go off. The also, the dome/map lights need to be removed. To do this, pop off the clear cover with a screwdriver and unscrew the assembly from the roof (the microphone mounts in the map light by the courtesy light)

The steering wheel controls are all bolt on and easily accessible after the front garnish is removed. The airbag can be unbolted and it is all very easy. Just once again, make sure the battery is disconnected. To replace the rear garnish of the steering wheel you will need to remove the steering wheel, I never did this, but rather use the dremel to modify the one that was on my car to allow for the install of the talk/back buttons. This should all be very easy if you can do the first part of the install.

I will update this as I have time and remember any small things, but if anyone has any suggestions, feel free to tell me and I will incorporate them into this DIY. the part numbers for the EX and LX models i am stillwroking on and will update/correct as soon as i have time.
I had a question on adding the nav steering wheel controls to my non nav civic. I want to add the voice recognition/back buttons. I have already put a nav unit in and have a pac-audi interface installed to hook up my steering wheel controls to my pioneer nav. So my question is that if I bought the nav steering wheel controls plus the plastic part for the steering wheel with the holes for the new buttons, would I just have to add a few wire to the harness to get the new buttons to work? It sounds like you did it one way or another in your write-up and any insite would be great. I really just want to know it is possible and that I wouldn't have to buy a whole new steering wheel or something. I have a friend who added the audio controls to his civic that didn't originally have them but I want to know it is the same for the nav controls (voice/back buttons). Thank you so much for your time and help!
 
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