2002 Trailblazer mirror wiring

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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=14862
Printed Date: May 17, 2025 at 12:55 AM

Topic: 2002 Trailblazer mirror wiring

Posted By: cwaynem
Subject: 2002 Trailblazer mirror wiring
Date Posted: June 12, 2003 at 11:30 PM

I am trying to tap the wiring on the rearview mirror to supply power to my radar detector. The wire I chose works ok, but removes the 12v when the car is put into reverse. Does anyone know if one of the wires has a constant 12v any time the ignition is on?

Replies:

Posted By: cwaynem
Date Posted: June 14, 2003 at 6:51 PM

I found GM uses the Gentex mirror with OnStar included. The connector has two rows of 7 pins each, but not all pins are used. The posts I have found here have fewer pins. Does anyone have the pinout for the OnStar version?

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