wiring diagram for 2003 civic hybrid
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=102998
Printed Date: September 10, 2025 at 5:56 PM
Topic: wiring diagram for 2003 civic hybrid
Posted By: hitmantony
Subject: wiring diagram for 2003 civic hybrid
Date Posted: March 12, 2008 at 10:32 AM
Hi just wanted the wiring diagram or some help with the pinout for the 2003 Civic Hybrid instrument cluster. Thanks.
Replies:
Posted By: KarTuneMan
Date Posted: March 13, 2008 at 10:00 AM
Civic Hybrid: | PASSIVE ANTI-THEFT | YES | TRANSPONDER | SEE NOTES | | 12 VOLTS | White | In ignition switch harness | + | | IGNITION | BLACK / YELLOW | In ignition switch harness | + | | ACCESSORY | BLACK/ red | In ignition switch harness | + | | STARTER | BLACK/ white | In ignition switch harness | + | | KEY SENSE | RED / white | In 16-pin green connector above driver's kick | - | | | | This is the factory alarm connector and is present even if vehicle has no factory security. |
| | TACH SIGNAL | Blue | At Tach test connector | AC | | | | This plug is located on the passenger side of the engine compartment between the battery and the headlight. |
| | LOCK | WHITE/ blue/2 sil. Dots | On 20-pin gray connector above driver's kick | - | | | | These wires require up to 750 milliamps to activate. Some products do not have strong enough doorlock outputs for this. You may need to install relays to provide a stronger ground. See the diagram in the available graphics. |
| | UNLOCK | WHITE/ GREEN/ 2 sil. Dots | On 20-pin gray connector above driver's kick | - | | | | These wires require up to 750 milliamps to activate. Some products do not have strong enough doorlock outputs for this. You may need to install relays to provide a stronger ground. See the diagram in the available graphics. |
| | DOORPIN | SEE NOTES | | | | | | GREEN is driver's door, LT.GREEN/ RED is passenger door. GREEN / WHITE catches rear doors. All wires are found on the green 16-pin connector above the driver's kickpanel. This is the factory alarm connector and is present even if vehicle has no factory security. |
| | TRUNK PIN | RED / 2 sil. Dots | In 16-pin green connector above driver's kick | - | | | | This is the factory alarm connector and is present even if vehicle has no factory security. |
| | BRAKESWITCH | WHITE/ black | On 4-pin plug at brakeswitch | + | | PARKLIGHTS | RED / black | In harness clipped to left side of fusepanel | + | | HAND BRAKE | GREEN/ ORANGE / 1 sil. Dot | In harness above diagnostic plug under dash | - | | HORN | ORANGE / 2 sil. Dots | In 16-pin green connector above driver's kick | - | | | | This is the factory alarm connector and is present even if vehicle has no factory security. |
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Posted By: hitmantony
Date Posted: March 14, 2008 at 10:21 PM
Thanks
Posted By: hitmantony
Date Posted: March 18, 2008 at 12:46 PM
Hey KarTuneMan,
I was looking at the harness wires and was wondering is it e.g. black(solid)/white(stripes) or the other way around black(stripes)/white(solid). I am having a hard time identifying the wires. I am able to identify some but not all, plus there are extra wires that are not listed above.
Do you by any chance have the pin-out for the two 22pin harness's for the gauge cluster.
I can get a civic service manual from my friend and was wondering will the harness wires be the same except for the extra wiring for the hybrid battery and charge info.
Thanks
Posted By: hitmantony
Date Posted: March 18, 2008 at 2:46 PM
Found out that the second color is the stripe, so that question is answered. I still can't seem to find some of the wires though.
Still need help with the pin-out and identifying the other wire's.
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