Does 2021 Ford F-150 with BrakeMaster Require Relay

Updated 05/10/2021 | Published 05/07/2021

Products Featured in This Question

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 4-Way Flat Connectors

(3337)

$90.90

Roadmaster Brake-Lite Relay Kit for Towed Vehicles

(726)

$47.95

Roadmaster BrakeMaster for RVs w/ Air or Air-Over-Hydraulic Brakes - Proportional

(143)

$988.95

Second Vehicle Kit with Breakaway for Roadmaster BrakeMaster Flat Tow Braking System

(31)

$510.62

Question:

Am setting up my 2021 Ford F-150, XLT, to tow behind motorhome. I am using the Blue Ox base plate, and will be wiring with the Roadmaster wiring kit RM 154. I plan on using my Roadmaster Brakemaster 9160 for the supplemental braking system. The motorhome is already set up with the air line and brake monitor wiring. Do i need a brake relay switch and if so what do you recommend ? Thanks

asked by: Lance R

Expert Reply:

Since you have the Roadmaster BrakeMaster # RM-9160 installed on your motorhome what you'd need to finish the install on your new vehicle is the Roadmaster Second Vehicle Kit part # RM-98160.

Since you are doing a diode kit for wiring and the BrakeMaster presses the brake pedal you will need the relay kit as well part # RM-88400.

expert reply by: Jameson C