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When you’re towing, you want to know what’s really happening with your towed car’s brakes—not just that your braking system is trying to activate. The Roadmaster Stop Light Switch Kit connects directly to the brake pedal so your RV’s monitor lights up only when the pedal is actually pressed. That means you’ll always know the brakes are being applied and can catch issues before they cause wear or damage. It gives a true, real-time signal straight from the pedal instead of relying on system pressure or air cylinder movement.
If a supplemental braking system isn’t sitting quite right, it can keep the pedal partly engaged and overheat components. This kit helps prevent that by confirming that the pedal fully retracts between stops. When it’s wired in, you’ll be alerted if the pedal stays pressed so you can fix it before it causes tire or brake damage. It’s a small piece of wiring that adds big peace of mind every time you tow.
Built to tie into the towed vehicle’s fuse box, the Stop Light Switch Kit runs on 12 volts and provides a constant, clean current. That makes it dependable for long hauls and steady enough to feed your RV monitoring system without flickering or false alerts. It’s also a solid solution for vehicles that don’t have a “tow” ignition position, keeping everything powered as it should be while you’re rolling.
Users call the install easy and the hookup simple. Once mounted under the dash, the switch lines up with the brake pedal using the included bracket and wiring. The result is a clean setup that just works—no complicated splicing or guessing which wire does what. Once installed, it fits neatly out of sight and does its job quietly every mile.
Flat towing can be a much more convenient way to take your car RVing with you than using a trailer or a tow dolly. It'll save you storage space both at home and at the campsite, and it takes less time and hassle to hook up.
To flat tow your vehicle, there are 5 basic components you're going to need: a tow bar, a base plate kit, a safety cable set, tow bar wiring, and a flat tow braking system.
| For the RV | Between the RV and Towed Car | For the Towed Car |
|---|---|---|
| Hitch | Tow bar | Base plate |
| Wiring plug | Safety cables | Braking system |
| Wiring adapter cord | Wiring kit/diodes |
The custom-fit base plate installs on the frame of your toad so you can connect the car to your RV with a tow bar. Hook up safety cables between the vehicles to ensure that the toad does not separate from the motorhome if the tow bar becomes detached. Tow bar wiring syncs your vehicle's signal lights with your motorhome's tail lights, as required by law in most states. Finally, the flat tow braking system - also required in most states - activates the brakes in the toad when you hit the brakes in the RV, making for smoother, safer braking, and preventing wear on your motorhome.
Customer Satisfaction Score:
90% were satisfied with this product
10% of customers were not satisfied
Ratings & Reviews
Bill H.
10/17/2015
It works great
Ralph C.
6/29/2017
great
Do you have a question about this Flat Tow Brake System?
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Dave T.
12/12/2015
Works great forgot it was even there