Trail Tail Wiring Diagram

Trail Tail Wiring Diagram. Was for the tail lights i believe. The following wiring diagram and electrical system schematics provide detail.

2009 Silverado Trailer Wiring Diagram - Wiring Forums (Douglas Perkins)

I need to see how the modulator that controls the turning signals and makes them brake lights as well is. I have noticed that the PO installed a trailer brake extension and he hacked into the wires just inside the tailgate. But got the info I need!

I need to see how the modulator that controls the turning signals and makes them brake lights as well is.

You must determine and verify which wire color goes to which!

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If your vehicle is not equipped with a working trailer wiring harness, there are a number of different. So its possible that fuse is dead and yet the turn signals would. I'll just use process of elimination to find which wire is the brake light.