Universal Trailer Brake Controller Wiring Harness: for The Lrichy 31-inch brake controller wiring harness is compatible with most controllers, reducing the risk of shorts and -wiring in the brake control system. The harness is hardwired at to allow for unplugging and transferring the controller to another vehicle. Wide Compatibility: 4-pin standard trailer brake controller wiring is compatible with for Towpower 8507111, for Towbower 74377; for Drawn Titration Activator I (5100), for Activator II (5500), for Activator III (5520); for P2 (90885), P3 (90195), for (90185), for PowerTrac (39523), for IQ (TK90160), for (39510) brake controllers. Easy Installation: Before installation, strip the outer jacket of the color-coded wire harness. Plug one end into the brake controller and connect the other end to the vehicle's connector for worry-free, trouble-free wiring. Heat shrink tubing is included. [Reliable and ] The brake controller wiring harness's plug is made of sturdy plastic with high-quality tinned copper internal components for excellent and oxidation resistance. The outer jacket is made of flame-retardant high-quality material, providing excellent coverage and capable of withstanding the rigors of harsh environments. Color: As Shown Material: plastic Package Contents: 1 * 8506911 Trailer Brake Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.