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Roadmaster Universal Stop Light Switch Kit

Roadmaster Universal Stop Light Switch Kit

Item # RM-751000
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Tow Bar Braking Systems
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Roadmaster Tow Bar Braking Systems - RM-751000
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Avoid damage to your towed car by ensuring that your supplemental braking system is properly positioned and working effectively. Kit activates your RV monitoring system to alert you when the brakes of your towed car are being applied. Lowest Prices for the best tow bar braking systems from Roadmaster. Roadmaster Universal Stop Light Switch Kit part number RM-751000 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (5)
  • Q & A (67)
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Roadmaster Tow Bar Braking Systems - RM-751000

  • Roadmaster
  • Stop Light Switch

Avoid damage to your towed car by ensuring that your supplemental braking system is properly positioned and working effectively. Kit activates your RV monitoring system to alert you when the brakes of your towed car are being applied.


  • Activates motorhome brake-monitoring system whenever brake pedal in towed car is applied
    • Ensures that the supplemental braking system is functioning properly
  • Works great for any application that does not have a tow position in the ignition
    • Compatible with any vehicle that has a brake pedal and any supplemental braking system that presses the brake pedal
  • Installs quickly and easily
    • Mounts beneath dash on brake pedal arm
    • Connects with just 3 wires - power, ground, and brake light connection
  • 12 Volts
  • Made in the USA

By tapping into your towed car's brake-light switch, this kit allows your RV's monitoring system to alert you whenever the brake pedal of your towed car is being applied. Other systems operate according to whether the air cylinder is extended and provide no indication of what is happening with the pedal itself. If your supplemental braking system is improperly installed, it may be continuously pressing on the pedal, impeding it from fully retracting and possibly causing damage to your vehicle's tires and braking system. With Roadmaster's Stop Light Switch Kit, you will always know when the brake is being depressed, and you will avoid costly damage.

751000 Road Master Universal Stop Light Switch Kit

Replaces Roadmaster RM-751477

Installation Details RM-751000 Installation instructions

This Product Fits The Following Vehicles

Customer Reviews

Roadmaster Universal Stop Light Switch Kit - RM-751000

Average Customer Rating:  4.8 out of 5 stars   (5 Customer Reviews)

Avoid damage to your towed car by ensuring that your supplemental braking system is properly positioned and working effectively. Kit activates your RV monitoring system to alert you when the brakes of your towed car are being applied.

- RM-751000

After fighting with the brake light switch on my Jeep JL, I ordered this instead. It went on so easy and so quick I had to reread the instructions to make sure I didn't miss anything. The only drawback I see is the Even Brake wiring and the rest of the wiring is roughly 14-16 gauge, and the wires on this item might be 20 gauge. No worries, they were plenty long enough that I took an inch of insulation off and folded it a few times. Used a heat shrink connector with solder and it easily passed the pull test. 690719

- RM-751000

Works exactly as designed for rigs that don't have an easy solution for adding trailer brakes. I would buy it again! 908783

- RM-751000

I have only used this on several short trips andonce on a long trip and it seemed to work fine. I did have an issue with the first unit i received and they were will to ship me a replacement along my route so it did not hold up my trip. I really appreciated the customer service on that issue. I will say i have not made any sudden stops so i can't comment on how much braking is actually happening but i believe it is assisting in the braking. 844377

- RM-751000

The kit worked great. No problems. The instruction video was perfect. 825256

- RM-751000

Great service....extremely prompt shipping and follow-up. 699362


Ask the Experts about this Roadmaster Tow Bar Braking Systems

  • Help Finding Stoplight Switch on 2021 Hyundai Palisade for Brake Controller
    We have an easy solution to provide a stoplight circuit on your 2021 Hyundai Palisade with the Roadmaster Universal Stop Light Switch Kit # RM-751000. Some vehicles have a hard time finding the stoplight circuit but this switch solves the problem. Other than that it really comes down to just continuing to test the wires you have on your brake pedal switch.
    view full answer...
  • How To Obtain Stop Light Circuit for Brake Controller On a 2008 BMW 5 Series
    The stop light switch circuit for a brake controller will need to have a full 12 volts. If the stop light switch circuit on a 2008 BMW 5 Series does not have a full 12 volts or a signal cannot be obtained then the solution for you is to install the Roadmaster Universal Stop Light Switch Kit part # RM-751000 which has been used for this very same purpose in the past and also eliminates having to splice into any wires on the vehicle. There are certain vehicles like a BMW 5 Series in which...
    view full answer...
  • Trouble Finding Cold Side of Brake Light Switch on 2015 Kia Sorento
    You may need to try to find some other wiring on your 2015 Kia Sorento until you find a wire with your tester that only gets hot when your brake pedal is pressed. I tried looking up what the wire color might be for cold side of your brake light switch but I wasn't able to find anything. If all else fails you can install the Roadmaster Universal Stop Light Switch Kit # RM-751000 for your brake controller. This mounts on your brake pedal arm and simulates the cold side of the brake light...
    view full answer...
  • Solution for Needing Stoplight Circuit on Difficult to Find Vehicle
    For vehicles where it's nearly impossible to find a dedicated stop light circuit the Roadmaster Universal Stop Light Switch Kit # RM-751000 is a great solution. Basically it gets power from your battery and has it's own switch that you install on the brake pedal which will then give you a dedicated stoplight circuit.
    view full answer...
  • Towbar Wiring and Supplemental Braking and Monitoring System for 2016 Chevy Colorado
    Thanks for your business; I see that you purchased the # RM-766 Automatic Battery Disconnect and # RM-156-25 Battery Charge Line Kit along with a few other accessories. The # RM-751000, which you were looking at, actually isn't needed on your 2016 Chevy Colorado. A supplemental braking system like the Roadmaster Even Brake # RM-9400 is what's required to actuate the Colorado's brake pedal in order to activate the brakes. The Included with the system is also an emergency breakaway kit...
    view full answer...
  • How To Obtain a Separate Stop Light Switch From a 2015 Winnebago Forza
    It sounds like you need to obtain a stop light switch signal from the 2015 Winnebago Forza and then have this sent to the center pin on the 7-way in order for the Smart Brake Supplemental Braking System to work properly. If that is the case then I recommend installing a standalone stop light switch, the Roadmaster Universal Stop Light Switch Kit part # RM-751000 as this will then allow you to send a signal to the center pin on the 7-way only when the brake pedal in the Forza is depressed....
    view full answer...
  • Best Parts Needed to Flat Tow 2019 Jeep Wrangler JL Recommendation
    Thanks for the picture of your 2019 Jeep Wrangler! Based on that we know that you do have the plastic bumper so the Roadmaster base plate kit part # RM-521453-4 is the correct fit and will work great. It's the easiest to use option to so I think you'll like it the best. The lightest weight and easiest to use compatible tow bar is the aluminum Roadmaster Nighthawk part # RM-676 which would be your best option for sure. The # SM99243 is also a really great option so you are on the right...
    view full answer...
  • Will Roadmaster InvisiBrake Work When Towed Vehicle Engine is Off and Power Brakes are Not Active
    I took a look at the online owner's manual for your 2018 Jeep JL Wrangler Unlimited and it does say to turn your engine off before flat towing. This does make pressing down on the brake pedal much more difficult but supplemental braking systems like the Roadmaster InvisiBrake # RM-8700 are built to accommodate this. If you have tried flat towing your JL and you are experiencing problems then please let me know. However if you just sat in your Jeep with the engine off and tried applying...
    view full answer...
  • How To Wire Brake Controller and 7-Way Plug In 2020 Hyundai Palisade
    The Prodigy P3 Brake Controller part # 90195 needs to be wired to the cold side of the brake light switch which is normally located near the brake pedal. You would need to test the wires at the brake pedal for the wire that only shows power when the brakes are applied using a circuit tester like part # PTW2992. That is the wire that you would attach the red wire from coming from the brake controller. I have attached a diagram that shows how to wire the 7-way plug and brake controller into...
    view full answer...
  • Plug and Play Lights for Flat Towing 2019 Jeep Wrangler Unlimited
    There is one plug and play option for lights when you are flat towing your 2019 Jeep Wrangler Unlimited, although it would use magnetic lights as opposed to the Jeep's lights. You would need the Pilot Magnetic Tow Lights - 4-Way Flat and 7-Way RV Connector - Wireless # NV-5164 which will plug into your Jeep's 4-way or 7-way to send signals to the mounted lights when you turn or brake. To use your Jeep's lights you'll need to splice into the wiring with the Roadmaster Diode 7-Wire to...
    view full answer...
  • Flat Towing Base Plates for 2020 Ram 1500 Big Horn
    We do have baseplate kits for the new 2020 Ram 1500. If you need a direct connect base plate, take a look at the Roadmaster # RM-522203-5 , which offer a quick and easy installation as well as a concealed design to make them barely visible when not in use. The built-in pull rings let you unlock arms so you can twist and remove them to make attaching and detaching the draw bars easy. If you've got a crossbar style tow bar, you'll need to use the Roadmaster # RM-522203-4 . If the brake...
    view full answer...
  • How to Get Stop Light Switch Signal for Supplemental Braking System on a 2019 Jeep JLU
    We actually recommend using the Stop Light Switch # RM-751000 to install the SMI Stay-IN-Play DUO # SM99251 on your 2019 Jeep JL Wrangler Unlimited. This is because the stop light switch is basically impossible to get to. This recommendation is also based off of what Roadmaster says for their similar supplemental systems. Since Roadmaster is very thorough in their research and installs this is really the best way to install a supplemental brake system on your vehicle. For a complete...
    view full answer...
  • Is Brake-Lite Relay Kit 88400 Needed for a 2019 Jeep JL Wrangler with Push Button Start
    The Roadmaster Brake-Lite Relay Kit # RM-88400 actually isn't needed on your 2019 Jeep JL Wrangler. Instead what you need to ensure that your lights are working is a stop light switch. We have the Universal Stop Light Switch Kit # RM-751000 or the Custom Stop Light Switch Kit # RM-751490 for you to use. I confirmed this with my contact at Roadmaster. For a complete flat towing setup you will also need a base plate kit, tow bar, safety cables, vehicle tow bar wiring, a supplemental braking...
    view full answer...
  • Base Plates That Fit 2019 Jeep JL Wrangler Unlimited With Steel Bumper
    Thank you for the photo and there is actually only one base plate kit that will work on your 2019 Jeep Wrangler Unlimited with the Steel Bumper Package, and that is the Demco Tabless Base Plate Kit # DM9519339 because it will mount underneath your bumper. There are a number of other parts you need to flat tow your '19 Wrangler Unlimited though since you mentioned Blue Ox it is possible you have one of their tow bars already. If you do you can use it with these base plates (though not...
    view full answer...
  • Installing an Indicator Light for Dinghy (Flat) Towing
    The long and short of it is that you need to route wiring from the cold side of the stop light switch (only gets hot when brake pedal is pressed) on your dinghy up to the location that you are mounting the RoadMaster Replacement LED Display Monitor # RM-300065-00 in your motorhome. The red wire is for power and the white wire is for ground. If you are able to add an extra wire from your towed vehicle and route it up to your motorhome then you are more than welcome to do so. Otherwise...
    view full answer...
  • Equipment Needed for Flat Towing 2020 Kia Soul
    In my research, I've found that only the manual transmission equipped LX model of the 2020 Kia Soul can be flat towed but I'd highly recommend you confirm the flat towability of the LX manual transmission model with your Kia Dealer. If you confirm that your vehicle can be flat towed, in addition to the towbar you already have, you'll need base plates, a wiring harness, safety cables, a braking system and possibly a high/low adapter. For a base plate, I'd recommend the # RM-521643-5...
    view full answer...
  • Demco Tabless Base Plate Compatability with Roadmaster Nighthawk Tow Bar for 2019 Jeep Wrangler
    The Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/ LED Lights - RV Mount - 8K # RM-676 is compatible with the Demco Tabless Base Plate Kit - Removable Arms # DM9519336. There is no additional adapter needed. I confirmed this with my tech contact at Demco.
    view full answer...
  • Will Roadmaster 9700 Brake System Activate Brakes When Motorhome Turn Signal is Engaged
    Great question! I reached out to my contact at Roadmaster who said that the Roadmaster 9700 Portable Supplemental Braking System # RM-9700 will only activate the brakes on your towed vehicle when it receives signal on both the yellow and green wires. This applies to the RoadMaster Second Vehicle Kit # RM-98800 you referenced as well. The only time that this becomes a problem is in the event that you have your hazards on and driving down the road. To avoid the braking system pulsing...
    view full answer...
  • Parts Needed to Flat Tow a 2019 Jeep Wrangler Unlimited with Factory Steel Bumper
    To flat tow your 2019 Jeep Wrangler Unlimited you need the basic towing components which include a base plate kit, tow bar, safety cables, vehicle tow bar wiring, a supplemental braking system, and possibly a high-low adapter. For your application I recommend using the Roadmaster Direct-Connect Base Plate Kit # RM-521450-5, the Roadmaster Nighthawk All Terrain # RM-676 and the Towing Combo Kit # RM-9284-2 because it comes with everything you need aside from the braking system and a high-low...
    view full answer...
  • Roadmaster BrakeMaster System RM-9160 in 2018 Jeep JL Wrangler Unlimited with Diode Kit
    The Blue Ox 4-diode tow bar wiring kit # BX8848 that you have installed in your JL Unlimited will not cause issues with the brake lights on the Jeep since it will be in Tow Mode when you are flat towing it. This will allow the motorhome to control the lights. In your 2018 Jeep JL Wrangler Unlimited the Roadmaster BrakeMaster System # RM-9160 will install using a Stop Light Switch kit # RM-751000 which provides a separate "brakes on" signal path back to your motorhome. To use this braking...
    view full answer...
  • Parts Needed to Flat Tow 2018 Ford Explorer
    In order to flat tow your 2018 Ford Explorer behind an RV, you will need a base plate kit, a tow bar, safety cables, a lighting solution, and a supplemental braking system. I do also recommend taking a look at the owner's manual for the vehicle (once it is in hand) before proceeding, as it will list any specific restrictions or guidelines when it comes to towing the Explorer with all 4 wheels on the ground. Starting with the base plates, I recommend the Roadmaster EZ4 Base Plate Kit...
    view full answer...
  • How To Install a 7-Way Trailer Connector and Brake Controller on a 2017 Mitsubishi Fuso FE130
    The 2017 Mitsubishi Fuso Canter FE130 is not a vehicle that we have had much experience in dealing with unfortunately so I don't have any information as to whether or not it came pre-wired with a trailer brake controller but the dealer might. The most common place you will find the brake controller wiring is under the driver dash up by the OBDII or parking brake. The wiring usually consists of four or five wires. If you cannot find the brake controller wiring or there is none present...
    view full answer...
  • Recommended Flat Towing System for 2017 Ford Explorer 4WD with Keyless Start
    The portable braking systems like the Blue Ox Patriot II # BRK2016 will work with the 2017 Ford Explorer 4WD keyless start but you will need to utilize the 12 Volt Outlet Kit, 20 amps # RM-9332 to get power from the battery and ground through the vehicle frame or metal supports. You will also use # RM-751477 if you don't have adjustable pedals or # RM-751478 if you have adjustable pedal. This kit activates your RV monitoring system to alert you when the brakes of your towed car are being...
    view full answer...
  • Can Roadmaster Even Brake be Used on a 2019 Ram 1500 with Advanced Brake Assist
    Yes, the Roadmaster Even Brake # RM-9400 can be used as the braking system for your 2019 Ram 1500. Since the ignition will be in the off position and you would have taken some specific steps to get the pickup ready to flat tow (check your owner's manual) the automatic braking that you referenced will not apply to this braking application. A few things that you will need when using this system is the Stop Light Switch # RM-751000 to ensure that it operates properly and the 12V Outlet...
    view full answer...
  • Can Electric Trailer Brake Controller Install in Dump Truck that Has Air Brakes
    Installing a brake controller in a vehicle like your dump truck that wasn't pre-wired for an electric brake controller is something we help people with all the time as most vehicles aren't pre-wired. So the first thing you need is to install a basic 4-way trailer wiring harness to provide the taillight signals with the # 119190KIT. Once this is installed you need to install the 7-way conversion kit # ETBC7 which gives the easiest solution for ending up with a 7-way connector and also comes...
    view full answer...
  • Additional Parts Needed to Install Roadmaster Invisibrake in 2018 Jeep Wrangler JL Unlimited
    With the Roadmaster InvisiBrake kit part # RM-8700 that you referenced the only thing else you need to install it in your 2018 Jeep Wrangler Unlimited JL is the stoplight switch part # RM-751000 and you'd be set. I attached a link to a video that shows this kit installed on a 2018 JL just like yours for you to check out as well.
    view full answer...
  • Can Roadmaster InvisiBrake be Used on 2019 Ram 1500 With Adjustable Pedals
    The Roadmaster InvisiBrake Supplemental Braking System # RM-8700 can absolutely be used on your 2019 Ram 1500 with adjustable pedals and there won't be any interference. This system will require a stop light switch to use with your truck, and that is going to depend on which model of '19 Ram 1500 you have. For the new model (non-Classic) you will need the Roadmaster Universal Stop Light Switch Kit # RM-751000. For a 2019 Ram 1500 Classic with adjustable pedals and WITH electronic...
    view full answer...
  • Parts Needed to Flat Tow a 2008 Honda CR-V Behind an RV with a Blue Ox Tow Bar
    A free tow bar? Hard to pass up that deal! The Blue Ox base plates # BX2246 for your 2008 Honda CR-V are indeed compatible with your tow bar which appears to be the Aladdin or a version of the Alpha (# BX7380). Either way the base plates are compatible. In addition to the tow bar and base plates you will also need a lighting solution and supplemental braking. The tow bar comes with safety cables and I see them in your picture so you won't need to add any additional cables. For lighting...
    view full answer...
  • Installing Roadmaster Even Brake on 2002 Jeep Wrangler with Brake Lights that Don't Work in Tow Mode
    I spoke with my contact at Roadmaster regarding your 2002 Jeep Wrangler. Normally when the brake lights don't illuminate when a vehicle's in the tow position, a stop light switch needs to be added to provide a signal to the Even Brake System # RM-9400. Roadmaster though tests for this when building their fit guide and my contact said that this shouldn't be the case with your model Wrangler, as there should be a white wire with a tan stripe behind the brake pedal that does receive power...
    view full answer...
  • Which Roadmaster Stoplight Switch Kit Fits 2019 Ram 1500 New Body Style
    For the 2019 Ram 1500 new body style the Stoplight Switch kit you need is the part # RM-751000 as the part # RM-751467 fits the previous generation.
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Installed by:
Jeff D
Expert Research:
Jameson C
Video Edited:
Jacob T
Video Edited:
Chris R
Updated by:
Sarah W
Updated by:
Isabelle B
Video by:
Jonathan Y
Test Fit:
Robert C
Written by:
Mike S

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