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I'm working on a lighting project for my 01 GMC Sierra. I would like to have the new lighting project tie into the automatic headlight wiring, preferably somewhere under the hood, so that when the headlights automatically go on, my new led lighting will also go on.


Do any of you know what the wiring color is for the headlight automatic on feature and where in the wiring harness will I find the correct wire to tie into?


Or do any of you know where I can find a complete wiring diagram for my vehicle?


Thanks in advance for the responses and suggestions.

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