Tail lights

I wanted to make maintenance easier for removing the bed so I didn’t have to cut any wiring. To do this I used a 4-way trailer extension cable to make a plug and socket for the tail lights at the end of the bed. If you really wanted to do this correctly so you could add on a trailer plug for towing you would want to use a 5-way trailer plug and socket but the cost of that was more than I was willing to spend right now as a 4-way plug served the purpose I needed.

Tool and Parts

• Wire Cutters/Strippers
• Heat shrink
• Electrical tape
• Zip ties
• Heat Gun
• Solder Seal Wire Connectors
• 4-way Trailer Extension Cable
• Trailer Wiring Bracket (Optional)

Truck Wiring

Wire Color	Signal	Watts
Yellow	Left Turn/Brake	27
Dark Green	Right Turn/Brake	27
Brown	Running Lights - Side Marker/License Plate, Low Brake	40
Light Green	Reverse	54

4-pin Trailer Plug

Wire Color	Trailer Signal	Truck Signal
Yellow	Left Turn/Brake	Same
Dark Green	Right Turn/Brake	Same
Brown	Running Lights	Same
White	Ground	Reverse

5-pin Trailer Plug

Wire Color	Trailer Signal	Truck Signal
Yellow	Left Turn/Brake	Same
Dark Green	Right Turn/Brake	Same
Brown	Running Lights	Same
Light Green	Reverse	Same
White	Ground	Ground

7-pin Trailer Plug

Wiring up a 7-pin trailer plug will be hard since the signal for the turn signal and brake are handled inside the steering column switch.

Wire Color	Signal
Yellow	Left Turn/Brake
Dark Green	Right Turn/Brake
Brown	Running Lights
Light Green	Reverse
White	Ground
Red	Aux 12 volts
Blue	Trailer Brake