2013 Chevrolet Tahoe photocell

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=142710
Printed Date: May 11, 2025 at 4:00 AM

Topic: 2013 Chevrolet Tahoe photocell

Posted By: comtech5
Subject: 2013 Chevrolet Tahoe photocell
Date Posted: March 03, 2017 at 4:13 PM

I need to tap into +12v when the vehicles' dash mounted photocell senses nighttime condition. And no voltage for daytime. I can't use the headlight ckt for reasons i won't go into here. Can anyone advise?

Replies:

Posted By: comtech5
Date Posted: March 09, 2017 at 10:25 AM

After much research, I'll answer my own question...

BCM connector 2 (white) pin 3 (brown w/white trace) goes high (+6vdc) when photocell on dash senses twilight/nightime condition. If you need +12vdc to trigger your device, just insert a relay with a 6v coil.

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