Reverse light wire tap location

[Stew]

If you'd like to tap into the reverse light wire and would like to not have to do it way in the back of your car, here is a more convenient location much closer to the under dash fuse panel. This is for a 2013 LTZ sedan with the 6MT, if you have a different year, transmission, etc you should confirm the wire color before making a permanent connection. As always, mess with your wiring at your own risk!

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First remove the driver side kick panel, there is a clip up by the hood release that pulls off with a little effort and the rest comes off by pulling straight up. Take your time and be careful, you will have to flex it around to detach it from the B-pillar bottom trim piece. To make removing the kick panel even easier you may want to remove the dash side panel first which also simply clips in.

I found the easiest location was just next to the drivers seat, if you get closer to the fuse box the wire harness splits and some wires head over to the transmission tunnel (oops, I mean exhaust tunnel) and it divides again by the hood release, I wasn't able to locate it forward of the drivers seat.

It is the green/white stripe wire with the tiny hole in the insulation.

 

[sonic007]

Great write up. Ive done this a few times but never had enough time for this.

 

[SonicBoy24]

Thanks for the info, but why is this necessary?

 

[ColonelPanic]

Thanks for the info, but why is this necessary?

Backup camera or some other equipment that needs a reverse signal?

 

[$ub$onic]

This is the reverse sensor btw ( 5 speed)

 

[Stew]

Thanks for the info, but why is this necessary?

Backup camera or some other equipment that needs a reverse signal?

The primary motivation for finding this was the DD8 auto dimming rear view mirror. One of the missing connectors in the Sonic to fully wire the auto dimming mirror is the +12v signal when in reverse, while in reverse the auto dim function is disabled in order to provide maximum visibility.

The frameless DBX auto dimming rear view mirror gets the reverse signal from the GMLAN bus so a separate reverse signal wire is not necessary for that mirror.

Also like ColonelPanic mentioned it would be useful for a backup camera.

 

[SonicBoy24]

thankss

 

[sonic007]

Im going to put a light in my vehicle for when i shift into reverse. I sometimes have other people drive my car. I dont have the reverse lockout. I found this wire a long time ago i just never got around to doing this.

 

[Stew]

Im going to put a light in my vehicle for when i shift into reverse. I sometimes have other people drive my car. I dont have the reverse lockout. I found this wire a long time ago i just never got around to doing this.

That sounds like a very good idea! You have the 1.8 5MT right? Was the wire the same color for you?

 

[sonic007]

Ill do a writeup once i get around to doing it. Lol

 

[Stew]

This is the reverse sensor btw ( 5 speed)

Is that a custom vent tube with breather filter I see on the top of your transmission?

 

[EX331]

Bravo, Stew!

 

[$ub$onic]

Is that a custom vent tube with breather filter I see on the top of your transmission?

Long story short my vent cap fell off and the closest thing I could find was the air intake off my nitro rc truck. I now have another vent cap