Roadmaster 751506 Brake Light Switch for Flat Towing

The Roadmaster 751506 Brake Light Switch is a vehicle-specific flat tow accessory designed to provide a reliable brake signal to your supplemental braking system monitor while towing. This switch mounts directly to the brake pedal arm under the dash and activates only when the brake pedal is physically depressed — giving your RV's motorhome monitor an accurate, real-time indication of braking activity in the towed vehicle.

Many modern vehicles — including the 2021 Ford F-150 — have OEM brake light switches that only function while the vehicle is running. When flat towed with the engine off, the stock switch cannot send a brake signal to your monitoring system. The Roadmaster 751506 solves this problem by adding a dedicated switch that operates independently of the ignition, ensuring your monitor always knows when the brake pedal is being applied or released.

Key Features:

• Provides an accurate brake pedal signal to any supplemental braking system monitor
• Activates only when the brake pedal is physically depressed — not based on system status alone
• Compatible with Roadmaster InvisiBrake, BrakeMaster, Even Brake, and other motorhome monitors
• Works with any supplemental braking system that moves the brake pedal
• Installs with 2 or 3 wires depending on application
• Mounts to the brake pedal arm under the dash
• Made in the USA by Roadmaster, Inc.

Unlike monitors connected directly to the supplemental braking system — which can only confirm the system is on or off — the Roadmaster 751506 tells you specifically whether the towed vehicle's brakes are engaged. This critical distinction helps prevent costly damage caused by a malfunctioning or improperly installed braking system. If the supplemental braking system is riding on the pedal or failing to engage, your monitor will reflect what is actually happening at the pedal.