Boat Trailer Wiring Harness | etrailer The 5 way flat trailer connector is most commonly found on boat trailers that have hydraulic brakes. The fifth wire is hooked up to the reverse light circuit on the vehicle which then sends a signales. 5-Flat electrical wiring connector Fifth wire added for surge brake lockout circuit which is becoming more common on today's newer boat trailers. 5-Flat wiring Connector will still work Amazon: boat trailer wiring harness kit Amazon: boat trailer wiring harness kit. ONLINE LED STORE 4-Way Flat Wishbone-Style Trailer Wiring Harness Kit [25' Male & 4' Female] [18 AWG Color Coded Wires] [SAE J1128 Rated] with 4 Flat Connector for Under or Over 80" Wide Trailers. 4.6 out of 5 stars 113. $12 $ 12. 99.
Related with wiring harness kits for boat trailers