How To Wire Trailer Lights 4 Pin. The reverse lights on a trailer must receive power from the reverse lights on the tow vehicle. Crimp the connection and melt the heat shrink tube with a heat gun.
If the screw is loose use a washer to keep it in place. Let s see what types of connectors the trailer light wiring industry uses today. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above.
While the basic configuration is a 4 way flat connector that features one female and three male ends you may come across connectors with up to seven pins for additional functions that require wiring including electrically actuated brakes power source for a winch etc.
Each light will have 3 wires. Blue electric brakes or hydraulic reverse disable see blue wire notes below in the trailer wiring diagram and connector application chart below use the first 5 pins and ignore the rest. Installing the 4 pin trailer wires power ground. Crimp the connection and melt the heat shrink tube with a heat gun.
