Troubleshooting Brake Lights Overriding Tow Bar Lighting Turn Signals

Question:

I have a DEMCO Air Force One supplemental braking system and this wiring harness. I notice when I hook up my 2020 Jeep Wrangler JLU 3.6L that when I apply the brakes from the motorhome and the turn signal at the same time, the brake lights from the Jeep override the turn signal therefore, no turn signal on the Jeep while braking. Is there a diode or something else I need to do to keep prevent this i.e. to have the turn signal continue to operate while braking?

asked by: Jay

Expert Reply:

What you need is the Roadmaster Brake Lite Relay Kit part # RM-88400. This will prevent your brake pedal brake light activation from overriding the turn signals like you are experiencing.

expert reply by: Jameson C