VINAUO 50ft trailer wiring harness, trailer wiring, 4 pin flat trailer Wiring Harness kit, Trailer Wiring Kit 4 pin flat plug, Trailer Wire 4 Way. 50ft trailer wiring harness: 50ft 4 flat trailer light wiring kit includes 42ft male and 8ft female wires,4 Pin trailer wire is enough to use for your trailer. Gives you the extra length, just need to extend the current truck to trailer wires. No need to splice your new wires, or trailer wiring harness extension connector with this extender. Trailer wiring harness ki 4 Pin: 4 flat trailer wire is color-coded and bonded wire for easy installation. White wire: Ground, yellow wire: Driver side stop/turn(left stop/turn), brown wire: Taillight run, green wire: Passenger side stop/turn (right stop/turn). Trailer wiring harness waterproof: A 50ft trailer wiring harness kit constructed with high-quality 18 gauge wires ensures fully sealed and waterproof to protect the electronics from short circuits. 4. 4-Way flat trailer harness kit: Complying with SAE J1128 standards for a low voltage primary cable. Constructed from the highest quality materials and superior quality guaranteed. Our trailer wire harness uses a standard 4-pin flat plug, Universal fits for 4-way trailer light wire replacement, such as utility trailers, boat trailers, etc. How to Use: White wire: This is ground wire, to the trailer's frame. Brown wire: To the running light wire. Yellow wire: To the left turn or brake light wire. Green wire: To the right turn or brake light wire. Notes: Please seal the trailer wire joints before using them outdoors or underwater. Please confirm the fitment with us before ordering. The trailer wiring harness kit package includes 42ft male trailer wire x 1 8ft female trailer wire x 1 wire clip x 4 hooks x 10"