2006 LT car OnStar Wiring Schematic
Try this google link for the information or you can call 1-888-4onstar and they maybe able to assist.
https://www.google.com/search?source....0.i6WdY0x8_sA
I am trying to hardwire a radar detector that is using a rear view mirror mount. The OnStar system is part of the rearview mirror assembly, but so are the courtesy lights. I want to be certain of which battery or ignition feed I splice into, since I am requiring both systems function properly at all times, as well as the detector. Ultimately it shouldn't matter, but I'm not one who can ignore the distinction between the two different circuit's. They are different.
Joined: Apr 2010
Posts: 12,605
From: Mentor, Ohio
If I understand correctly, you want to grab power from the mirror for the radar detector? If that is what you are up to, would it help to just determine which circuits providing power in the mirror go to which systems? If so, I might be able to grab that info.
Correct. It absolutely help.
Last edited by PatternDayTrader; Dec 18, 2017 at 07:44 AM.
Joined: Apr 2010
Posts: 12,605
From: Mentor, Ohio
I hope these help. The one titled "Stationary Windows Connector End Views" has the pin outs for the rear-view mirror. To verify if the power works the way you want/expect, you may want to probe with a volt meter or test light.









