Troubleshooting LED Tail Lights Not Working on Trailer When Connected to 4-way

Question:

I put some LED brake, turn, driving lights on my hitch haul. While they will activate by connecting straight to battery power, when I plug it into the factory 4-way on my 2018 RAM 2500, they will not light. Would resistors fix this? Do I need resistors on each positive wire brake, blinker and running?

asked by: Scotty

Expert Reply:

You have the right idea here and based on what you have told me resistors are the answer. You would need to install Load Resistor Kit for LED Turn Signals # DI34ZR. When you add resistors you need one per power wire. Alternatively you could also use the Trailer Connector Adapter w/ Lamp-Out Sensor Bypass # 20142 which would do the same thing without having to splice any wires.

expert reply by: Robin H