Can A Roadmaster Brake Light Relay Kit Be Installed In A 2021 Ford F-150

Updated 03/20/2023 | Published 03/17/2023

Question:

Can I get a video on installing a brake switch on a 2021 Ford F150

asked by: Ron L

Expert Reply:

Roadmaster lists the brake light switch wire as unusable on 2021 Ford F-150's, which typically means that the wire gauge is so small you won't be able to splice in the relay # RM-88400. You could attempt to find it and splice in using a quick-splice but they aren't known for being the most reliable connection.

Other than that the only way to solve this issue would be to use suction cup mounted tow lights since the body of the truck is aluminum. Tow lights will completely bypass the F-150's lighting system and run solely off of the motorhome.

expert reply by: Kevin C