Check the listing for details. Trailer Brake Controller Harness, Select Jeep Wrangler JL, Gladiator. Condition: New. Listed at 30.04 USD. EASY TO INSTALL. No cutting or splicing required! This vehicle-specific wiring harness allows fast, easy, plug-and-play trailer brake controller installation. Simply plug one end into your vehicle and the other into your CURT brake controller. RELIABLE POWER. This brake controller wiring harness is constructed with quality 12-gauge wires to ensure consistent power between your trailer brake controller, vehicle and electric trailer brakes. VEHICLE-SPECIFIC. This electrical brake controller wiring fits select model years of the Jeep Wrangler JL and Jeep Gladiator. VERSATILE USE. This trailer brake controller wiring kit is compatible with any CURT trailer brake controllers equipped with a quick plug connector -- proportional, inertia and time delay.