How to Correct Flashing LED Trailer Lights Using Load Resistors

Question:

Hello, We are having issues with our Land Rover Discovery 3. The problem is the led caravan lights keep flashing when attached to the vehicle. When we the right indicator, the left strobes too and visa versa. Please advise if you have an adaptor to fix this problem. Regards.

asked by: Ray O

Expert Reply:

High-efficiency LED type trailer lighting pulls much lower current than standard incandescent lights and sometimes this can cause odd behavior from the wiring harness when it cannot recognize the connected trailer.

There's a simple solution to this issue: installation of a load resistor at each affected LED light. Load resistors mimic the electrical signature of incandescent lights to let the trailer wiring work as intended.

If your trailer lights use a PL-3 type connector you can use Optronics part # ALEDRST2B. If you need to hard-wire the load resistors we offer a 2-pack of the ceramic type, part # DI34ZR.

expert reply by: Adam R