EASY TO USEThis is a Traditional SAE J1128 standard 7-wire 100ft trailer harness spool, the seven wires are all enough 14 gauge and the same length. There are mainly seven colors, red, brown, white, purple, blue, yellow, and green, which can easily separate the circuit for use. Yellow: Left Turn/Brake Light, Green: Right Turn/Brake Light, Brown: Tail/Running Lights, Blue: Brake Power, Purple: Reverse Lights, Red: Battery Hot Lead, White: Ground. DURABLE & FLEXIBLEThe cable is made of high-quality multi-strand copper clad aluminum wire and insulated with flexible PVC. It makes the wire not easy to be damaged in daily use, and it is easy to install where you need it. The spool has high flexibility and is waterproof, which improves the service life of the spool. Traditional SAE7 spools flexible 14 AWG trailer wiring harness meets or exceeds Traditional SAE standards. Trailer harness spools are grease and acid resistant, making the spool last longer and allowing you to use it