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Running power wire to trunk

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179K views 156 replies 91 participants last post by  low&fast1  
#1 ·
This is the way I ran my 4ga wire, A 0/1 should be able to do the same except where I went through the plastic in the engine compartment, you might have to drill,

Step 1,

Open engine compartment and remove side trim on the driverside.

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Step 2

Under the driverside dash on the side of the car is a plug, pull out the plug and run your wire through it into the sealed fender of your car, push as much wire through as you can untill you can reach it from the engine compartment, you may need a hanger or grab tool to get the wire. Make sure you cut a hole in the plug and run the wire through it (use a grommet if your wiring kit had one) then replace the plug, nothing worse than a draft.

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Step 3

Remove clip over your trunk lock, and remove the panels, be carful of the center pillar, inside it is the airbag sensor(not that you could set it off but if you damage it it might not work when you want it) and remove your rear panels, now you can either pull the seat out or just push the wire through the space into the trunk.

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there is a space to run the wire when this is removed,
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And voila Power to the trunk, with no drilling, or altering of any metal or material in your car except the plug.
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This is what you get after all the work lol.
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I hope this helps, if any of the pics need to be better just ask I'll go out and take some more with panels off etc.

I hope this post isn't too long. sorry if it is

I had this posted Before and people keep askin about it so I figured I'd start a new thread with just this post, If the moderators want to add it to the DIY go to it:wave:
 
D
#67 ·
ok, i did this DIY and it was very helpful.. running the wire through the firewall was no problem but the only issue I have is with the trunk lock lever.. everything works in terms of the lever, but the valet lock does not.. it looks like the actual lock component can only go one way back into the housing.. my problem is..

-when i turn the lock to "lock" it will work and prevent the lever from releaseing the trunk BUT it will NOT UNLOCK, the keyhole turns but you can tell it isn't grabbing onto anything and is just turning from lock to unlock therefore it is now stuck in lock. I have to remove the locking component and manually "unlock" the lever.

Am I inserting the lock unit back into the housing improperly? Is it supposed to be put back in a certain way? I have looked and it seems like it can only go back one way :S
 
D
#68 ·
ok i figured out what was wrong.. because of the poer wire (im only runnign 4ga), it has prevented the housing/keyhole to sit properly/100% right causing the nub on the lock to catch the latch properly.. I couldnt get it to properly sit with the power wire inside the panels... there is just no way... at least in my situation.. i did a quick fix to make sure the lock's nub is lined up and that is all i care about....

in the future, if anyone is going to do this DIY, i would suggest going through the firewall the same, but detouring and running the power wire down the PASSNEGER side where there is much more room and less things in the way under the kick panels/side panels... then run the RCA's which are thinner and more flexible, down the drivers....
 
V
#74 ·
Has anyone had success with this in a 08 ex coupe? I tried running my wire through this hole but it seems to dissappear into a sealed part of the frame.

I am running two 1/0 wires, I ran the other wire through a gromment which looked like a wire was going through it but it was empty, it was below the hood release cable. This wire came out into the wheel well.

From the inside of the cab I see three holes, two of which exit out into the wheel well which can be seen if the plastic liner above the tires is pried back. the third hole is a mystery
 
M
#84 ·
Thanks OP, I did this today.

I found that in my car (2006 sedan) there was another wall on the engine side that I had to get the wire through, and what a pain in the a@@ that was. The hole in that wall was in a spot that only a 10-year-old could comfortably reach.

I ended up threading the wire in from the engine side and grabbing it on the bottom with a coat hanger.
 
R
#86 ·
I was able to run 1/0 guage following the method in this thread. I had already run a 4 guage wire in an earlier install and lucked out using the upper hole of the trio. This was not going to work for this install as I tried using the 4 guage wire to pull through the 1/0...was not going to happen. I finally settled on pulling the fender liner and using the lower hole to run the cable. It barely fits:

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This is the largest cable you can run through the hole while still using a grommet. Any larger, and you will need to get after it with a grinder/dremmel. I had to install the grommet from the fender side as there was no way I could install it from the interior side. Here it is installed with the grommet and wrapped with loom:

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Now, to route it through the center console. Thanks for the excellent write-up.
 
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