Answer
Jun 28, 2017 - 03:38 AM
With this brake controller you will need a wiring harness, below is a link to the harness for the 2006 GMC 1500. Proportional braking is when you brake your vehicle it applies the same amount of force to the trailer brakes.
https://www.rvupgradestore.com/Tekons...
https://www.rvupgradestore.com/Tekons...
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