2004 Honda Civic Radio Wiring

Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=88070
Printed Date: May 01, 2024 at 9:05 PM

Topic: 2004 Honda Civic Radio Wiring

Posted By: tigersnare04
Subject: 2004 Honda Civic Radio Wiring
Date Posted: December 30, 2006 at 6:28 PM

Can anyone tell me the colors of the 12v switched and ground for a 2004 Honda Civic?

Replies:

Posted By: KarTuneMan
Date Posted: December 30, 2006 at 10:43 PM

+12V DC Battery(Constant)	WHITE/ red	9	10 Amp	Fuse box under hood
Switched Accessory	Yellow/red	8	7.5 Amp	Fuse/relay box under dash
Ground	Black
Illumination	RED / black
Left Front +	GREEN/ black
Left Front -	Light green
Right Front +	GREEN/ YELLOW
Right Front -	Gray/red
Left Rear +	Blue/white
Left Rear -	Blue/black
Right Rear +	Pink
Right Rear -	Blue / YELLOW

AT SPEAKERS

Wire Function	Color	Note
Left Front Mid +	GREEN/ black	GREEN/ YELLOW for Hybrid and Sedan
Left Front Mid -	Light green	Gray/red for Hybrid and Sedan
Left Front Tweeter +	GREEN/ black	*
Left Front Tweeter -	Light green	*
Right Front Mid +	GREEN/ YELLOW	GREEN/ black for Hybrid and Sedan
Right Front Mid -	Gray/red	Light green for Hybrid and Sedan
Right Front Tweeter +	GREEN/ YELLOW	*
Right Front Tweeter -	Gray/red	*

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Posted By: nikneymeyer
Date Posted: January 06, 2007 at 10:23 PM

I have a 2001 Civic, which from what I've read has the same stereo wiring harness/pinout as the 2004. Today I installed an aftermarket head unit. There were four wires on the factory harness that did not correspond to any of the wires on the new HU. There was a RED / black (illumination, which I gathered from this post), a red (dimmer, which I got from some other message board), plus a yellow/red and a YELLOW /GREEN. I haven't found anything that these are for. Currently I have them taped off.

Everything else appears to be wired up correctly. When I turn the ignition to the acc. position, the needles and odometer display wig out for about 3 seconds, then appear to be fine. The HU's power button becomes illuminated, but that's all I can get it to do for now.

Is there something I am missing? I have installed a number of stereos in the past, but the latest model was a 1989 Cutlass Supreme.

Any insight would be greatly appreciated. Thanks!

--Nik