Power supply wire to ignition coils ('09 Si) - 8th Generation Honda Civic Forum
8thCivic.com

Go Back   8th Generation Honda Civic Forum > Civic Style > I.C.E., Electrical, Security, & Navigation

Reply
 
LinkBack Thread Tools Display Modes
Old 05-06-2017, 11:25 AM   #1 (permalink)
Junior Member
 
Join Date: Oct 2014
Posts: 12
si_scott just put it into 1st gear on 8thcivic
iTrader: 0 reviews
Power supply wire to ignition coils ('09 Si)

Can anyone tell me where to find the power supply wire to the ignition coils on an 8th generation ('09) Civic Si, and what color it is?

Thanks in advance.

si_scott is offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-06-2017, 04:33 PM   #2 (permalink)
Senior Member
 
RedCoupe's Avatar
 
Join Date: Dec 2015
Posts: 478
RedCoupe just put it into 1st gear on 8thcivic
Garage
iTrader: 0 reviews
Well if you just remove the cover and look at each connector plugged into each coil you will see that there are three wires:one (black/white), another which varies (4 Brown, 3 white/blue, 2 blue/red, 1 yellow/green), and a third wire (black) which grounds the coils.

The black/white wires provide 12 volts through the ignition relay, fuse 18 to the battery. The other wires are controlled by the PCM/ECM and work as a trigger to the individual coils. Black goes go ground point G101 which is a bolt on the intake manifold on the TB side.

If your not getting any spark at all on any of the plugs, check the fuse the relay and then the ground.

RedCoupe is offline   Reply With Quote Quick reply to this message
Old 05-06-2017, 09:18 PM   #3 (permalink)
Junior Member
 
Join Date: Oct 2014
Posts: 12
si_scott just put it into 1st gear on 8thcivic
iTrader: 0 reviews
Thanks for the info. What I'm trying to do is install an aftermarket tach using a tach adapter (Autometer). Autometer says " it will require locating the power supply to the ignition coils and cutting the power supply prior to the power splitting between all of the coils." I *think* it's a blue wire found in the engine bay, in a bundle of wires running to the coils, but after making the necessary connections the tach reads low RPMs.

Either I've got the wrong wire, or the tach adapter will not work.
si_scott is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-07-2017, 11:40 PM   #4 (permalink)
Senior Member
 
RedCoupe's Avatar
 
Join Date: Dec 2015
Posts: 478
RedCoupe just put it into 1st gear on 8thcivic
Garage
iTrader: 0 reviews
Not familiar with the product, is this the instruction sheet? http://www.autometer.com/media/manual/2650-561X.pdf

If so it has to be the black/white wire since its common to all the coils and carries 12 volts. You will have follow that wire back from the coil connectors and find the place before the splices to the coil packs begin, that will require either removing the conduit covers and/or carefully peeling back the loom tape to expose the wires. An alternative is to intercept it from the underhood dash and relay box, its a blue wire (at some point it splices to the black/white wire) but I can't tell you which connector it is on I don't have a pin-out of all the connectors on that box.
RedCoupe is offline   Reply With Quote Quick reply to this message
Old 08-19-2018, 09:31 AM   #5 (permalink)
Junior Member
 
Join Date: Oct 2014
Posts: 12
si_scott just put it into 1st gear on 8thcivic
iTrader: 0 reviews
Quote:
Originally Posted by RedCoupe View Post
Not familiar with the product, is this the instruction sheet? Can't post links. Old link was here. (Jesus Christ...)

Yes, that is the instruction sheet.

If so it has to be the black/white wire since its common to all the coils and carries 12 volts. You will have follow that wire back from the coil connectors and find the place before the splices to the coil packs begin, that will require either removing the conduit covers and/or carefully peeling back the loom tape to expose the wires. An alternative is to intercept it from the underhood dash and relay box, its a blue wire (at some point it splices to the black/white wire) but I can't tell you which connector it is on I don't have a pin-out of all the connectors on that box.
I'm back to trying to get my tach working again. I tried a couple of blue wires under the hood, but neither worked.

I need to the find 12v+ coil power wire, somehow...
si_scott is offline   Reply With Quote Quick reply to this message
Old 03-26-2019, 08:18 AM   #6 (permalink)
Junior Member
 
Join Date: Mar 2019
Posts: 10
SaminaCotzier has their car in neutral right now
iTrader: 0 reviews
nice information..
SaminaCotzier is offline   Reply With Quote Quick reply to this message
Old 05-09-2019, 01:11 PM   #7 (permalink)
Junior Member
 
Join Date: May 2019
Posts: 6
RoyBeverly has their car in neutral right now
iTrader: 0 reviews
Great information. . . .
RoyBeverly is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the 8th Generation Honda Civic Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
09 Si, hasn't started in over a year. I have some questions. HxcRobb The 2nd Mechanical Problems & Technical Chat 5 05-05-2017 06:31 PM
09 civic si CPE 17/9 what offsets? DPL8 Wheel And Tire Upgrades 1 04-03-2017 09:52 AM
Bought these 14-15 Si HFP wheels, but will they fit my 09 LX? kakrohn Wheel And Tire Upgrades 1 02-18-2017 07:09 AM
New Suspension for my Civic Si 09 kaynguyen Suspension and Brakes 8 11-22-2016 01:04 PM


All times are GMT -4. The time now is 05:31 AM.



Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
copyright 8thcivic.com - all rights reserved