Will the Pollak Circuit Tester Work on Newer Trucks Using LED Lights

Question:

Some tester wont draw enough amperage to trigger to trailer lights control module - will this tester work with a 2020 GMC Sierra 3500HD?

asked by: Lorenzo

Expert Reply:

While the Pollak 7-Way to RV Socket LED Circuit Tester # PK12741 is designed to work with all 7-way connectors. There have been issues with vehicles such as Audi, Mercedes-Benz, and Volkswagen that have issues due to the LED lights having such a low power draw. The newer truck models are starting to have some of those same issues since they are starting to use led lights as well, so the tester will most likely not draw enough power to work.

The best way to remedy that if it happens for you would be to use the 7-Way Trailer Adapter for Towing Trailers with LED Lights # C57003. The adapter has load resistors that will simulate additional load on the system.

expert reply by: Scott S