Agreed... need to know the tow vehicle.
That said, most full-size pickups have a socket for a brake controller (the owner's manual will show you where) and you buy the vehicle-specific adapter harness when you buy the brake controller. It literally does take seconds to plug it in - you will spend more time deciding where to mount the bracket.
2015 Rockwood Signature UltraLite 8282WS Platinum, GY Marathon LRD, TST 507RV TPMS
2005 GMC 2500HD CCSB D/A, Curt E16, Prodigy P2, Garmin RV760LMT w/BC-20 b/u cam
Self restraint is for the young. I'm old and want it NOW!