Forum Discussion
TKW
Jun 06, 2019Explorer
Not familiar with Prodigy P3 but my P2 is connected to my Chevy with an available pig tail to a plug under dash. Factory brake controllers were unheard of those days. If your '12 GMC comes with factory towing package, there must be a plug somewhere under dash. Call Prodigy's customer service and they probably can rush you one of those harnesses. If not, hardwiring these controller to the brake light circuit is relatively easy. Even I can do it.
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,130 PostsLatest Activity: Apr 27, 2025