Installing The Roadmaster Brake Light Relay Kit And BrakeMaster In A 2020 Ford F-150

Question:

I purchase your roadmaster towing system for flat towing my 4x4 f150. also purchased brake light relay system. my vehicle is with key, to which wire does the motorhome monitoring sensor wire connect to

asked by: E F

Expert Reply:

The brake light switch wire for your 2020 Ford F-150 is purple and white. You'll want to find the connector above your brake pedal and disconnect it to get better access to this wire. Once you have it you can cut the wire a few inches above the connector and attach the connector side of the wire to the blue wire of the Relay Kit # RM-88400 along with the wire you ran into the cab to connect to the indicator light in the Roadmaster BrakeMaster System # RM-9160.

In the attached video below you can see this process starting at the 12:08 minute mark.

expert reply by: Kevin C