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MartyW's avatar
MartyW
Explorer
Mar 10, 2014

1997 GMC K2500 Suburban - no brakes in tow harness

Hi to all, A couple months ago we purchased a 1997 GMC K2500 Suburban 7.4L to use as a TV. After fixing several small things let go by previous owners it was time this weekend to replace the old/or...
Tow Vehicles
DavisK's avatar
DavisK
Explorer
Mar 10, 2014
Yellow wire should be energized when the brake lights are on and toggle on and off when the left turn signal is on. Green wire should be energized with the brakes are on and toggle on and off when the right turn signal is on. No other wires provide power to brake lights or turn signals.

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