01-08-2026, 08:29 PM
Mike. This is all about wiring. Not sure exactly what you’re expecting from “running lights”. Assuming the 7-pin and 6-pin plugs/outlets are wired correctly, only taillights will be illuminated.
This is by design. Towing harnesses have diodes that act as a one-way valve that prevent any current from back-flowing into the toad’s entire electrical system. So, the harness is tapped into ONLY the tail/brake-light wires and the diodes are placed upstream thus preventing any possibility of powering anything else.
As I’ve mentioned, our coach must have the parking brake released for the brake lights or turn signal to work.
This is by design. Towing harnesses have diodes that act as a one-way valve that prevent any current from back-flowing into the toad’s entire electrical system. So, the harness is tapped into ONLY the tail/brake-light wires and the diodes are placed upstream thus preventing any possibility of powering anything else.
As I’ve mentioned, our coach must have the parking brake released for the brake lights or turn signal to work.
Steve & Janice Vance
2015 Newell #1524
Glendora, CA