I have a single Prodigy P3 and I've got custom harnesses in both my Chevy Traverse and my Silverado. I can put the controller in either one at any time. No problem. The controller has NOTHING to do with the vehicles braking system. Only the trailers brakes.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10