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RoadMaster Stop Light Switch Kit

RoadMaster Stop Light Switch Kit

Item # RM-751452

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Tow Bar Braking Systems

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Roadmaster Tow Bar Braking Systems - RM-751452
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  • Stop Light Switch
  • Roadmaster
Avoid damage to your vehicle 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 Stop Light Switch Kit part number RM-751452 can be ordered online at or call 800-298-8924 for expert service.

  • All Info
  • Reviews (10)
  • Q & A (48)
  • Videos (4)
  • Photos
  • Why etrailer?

Roadmaster Tow Bar Braking Systems - RM-751452

Avoid damage to your vehicle 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
  • Wires directly into towed car's fuse box for constant current
  • Made in the USA


  • 12 Volts
  • Application: custom fit for your vehicle

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.

751452 Road Master Stop Light Switch Kit

RM-751452 Installation InstructionsInstallation Details RM-751452 Installation instructions

This Product Fits The Following Vehicles

2007 - 2014 Jeep Wrangler

2007 - 2014 Jeep Wrangler Unlimited

Video of RoadMaster Stop Light Switch Kit

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Roadmaster Stop Light Switch Kit Review

Today we're going to be taking a look at Roadmaster's line of custom stoplight switch kits. You'll want to refer to our fit guide for the appropriate switch kit for your vehicle.Here on our motor home we have our indicator light that's connected to our stoplight switch. When this light illuminates, we know that our braking system that is installed is applying the brake pedal in our towed vehicle. And we're going to get this signal thanks to our stoplight switch. Here when I hit the brake in our motor home, the light's illuminated so I know that our braking system is working properly.This stoplight switch is going to provide you with an additional brake stop signal. This is important if you're flat towing a vehicle that doesn't have a brake signal when in tow mode.

Without a signal you'll have no way of monitoring whether or not your brake pedal is being depressed. You can use this stoplight switch to connect to the indicator that comes with your supplemental braking system so you can verify for sure that your brake pedal's being depressed when you hit the brakes in your motor home.In most instances it'll be well hidden or blend in with the rest of the wiring down below so you won't even notice it. Here you can barely even glimpse the switch itself. And the kit comes with everything you need to get it installed. This includes the switch, the wiring, the fuse and the custom bracket that's specifically made for it to mount right onto your vehicle.

The bracket's really what makes it custom for your vehicle. It allows the switch to mount seamlessly and easily adjusts to the contour of your brake pedal.A less common use is for a brake controller. If your vehicle doesn't have a compatible brake signal for your brake controller then you can install one of these and get that signal for your brake controller to easily hook up to your trailer.And that completes our look at Roadmaster's line of custom stoplight switch kits.

Customer Reviews

RoadMaster Stop Light Switch Kit - RM-751452

Average Customer Rating:  4.4 out of 5 stars   (10 Customer Reviews)

Avoid damage to your vehicle 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-751452

This product was exactly what I needed. I wanted an indicator light that told me when the brake pedal moved on my towed vehicle, not when my brake system was activated. This part fit perfectly on my 2014 Jeep Wrangler sport. Others with newer wranglers reported having to notch bracket but there was no need for that on a 2014. I wired mine a little differently than the instructions show and there was no need to tap into the wiring on my Jeep. My indicator light recieved constant power from my coach, when the brake is pushed it completes the circuit with a ground from the coach and the light comes on. I feel confident that if there is a problem and my brakes are activated when they shouldn’t be I will be aware of this before it causes damage to the toad brakes. Great product 494987

- RM-751452

There was a challenge presented when installing the Roadmaster Stop Light Switch (Kit #751452) on my 2015 Jeep Wrangler Sport Unlimited. The kit's Black C Bracket was not able to swing around fully to allow the kit's gray stop switch to be in line with the brake pedal. This was due to blockage caused by existing jeep's stop switch gray mounting bracket. As a result, I had to cut a notch using a Dremel and a grinding bit. The area where I had the interference from the jeep's bracket and the notch to allow proper installation is indicated in the attached photo. It is imperative that the kit's stop light switch when mounted correctly is fully depressed. If not, 12 volts will be sent to the Evenbrake's transmitter which will result in an alarm and failure to use the Evenbrake system. Also in reference to the Roadmaster installation instructions, there is no removable lower plastic cover. Installation requires twisting ones body under the dashboard with limited use of my left arm (I am right handed) to use tools. I ordered the stop switch from I am using a Roadmaster Evenbrake system. I do want to state a clarification concerning the battery based on what I read in etrailer's and other forums. You do not have to disconnect the jeep battery on the 2015 Wrangler Sport Unlimited Model. Jeep made a change in the second edition of the 2014 operators manual which is reflected in the 2015 manual. The earlier 2014 edition did state the disconnecting of the battery before towing. I had informed the Roadmaster tech department of this change. The 2015 Jeep Wrangler Sport Unlimited steering column does not lock. You do not have to leave the key in ignition. You can remove it when ready to tow. My 2015 jeep has the power convenience group. The vehicle has two 12 volt convenience outlets. One is only powered on when the ignition switch is on. The other outlet is connected directly to the battery via a fuse. It is on all the time. This is the outlet I use for the Evenbrake. Now, Jeep does state not to plug in devices that use more than 13 amps or 160 watts. Roadmaster as per their installation manual indicates that the maximum draw of the Evenbrake is 10.8 amps. I reviewed all the above to the Roadmaster tech department and they said I should not have a problem using the Jeep's always on 12 volt outlet. We recently went on a camping trip on Columbus Day weekend to a campground 120 miles from the house and no power problems were encountered with the Evenbrake system. One other clarification is that the Jeep's brake lights are tied into the power convenience/electronics system. The brake lights will operate for a short period of time after the ignition is turned off and/or you open the jeep's door. Use of the brake lights will time out. This is the primary reason why I chose the stop light switch bracket kit. The Roadmaster Evenbrake transmitter and the hot leg to the kit's stop light switch are fed from a dedicated 10 amp fuse protected line from the battery. This way, I avoided drilling a hole into the weather resistant under the hood fuse box plus negating the need to make rube goldberg connections to existing fuses. 155854


It works great

Bill H - 10/17/2015


- RM-751452

Fit as advertised. 610019

- RM-751452

Great product. Easy to install 575493

- RM-751452

I just received this product and have not had the time to install 465372

- RM-751452

I installed this product so I could monitor the application of the brakes on my toad from the cockpit of my motor home. Easy install, and worked like a charm. I highly recommend this product. 459912

- RM-751452

Product works well 452978

- RM-751452

The thought of tapping into a car's electrical system makes me very nervous. So I bought this switch to eliminate that requirement. The alignment with the pedal was not perfect so I thought I might have problems down the road but I have not. 379054

- RM-751452

I rec. the product on time , installed it and it work great the whole process was great, and thank you doing everything you said you and the product would do. Ralph 264802



Ralph C - 06/29/2017


- RM-751452

Thanks to a review I was aware I might have to grind out part of bracket to get it to fit. I did have to. Roadmaster said it wasn't necessary . I think they have to update the bracket for the newer models. Etrailer was more helpful than Roadmaster. 165406


Works great forgot it was even there

Dave t - 12/12/2015


Ask the Experts about this Roadmaster Tow Bar Braking Systems
Do you have a question about this Tow Bar Braking System?

  • What do I Need to Flat Tow a Jeep Wrangler JK with Factory Bumper
  • To flat tow your Jeep Wrangler JK behind your motorhome, you will need a base plate kit, tow bar, safety cables, tail light wiring harness, and a supplemental braking system. Depending on the year of your Wrangler, you may also need a Brake-Lite Relay, # RM-88400, (2012, 2013, 2015-2018) or a Stoplight Switch, # RM-751452 (2007-2011, 2014). For your base plates and tow bar, I recommend using the Roadmaster Direct Connect Base Plate Kit, # RM-521448-5 for 2010-2018 or # 1429-3 for 2007-2009,...
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  • Recommended Wiring to Flat Tow a 2014 Jeep Wrangler 2-Door with 2005 Bounder
  • I'm glad no one was hurt in the loss of your Liberty's brave fit against the cement truck, but don't worry, I can help you equip your Wrangler with the proper products to get it flat tow ready. First, I would recommend the Hopkins wiring harness # HM56200 because we've had better luck with them not having issues after installation. This wiring harness has diodes to prevent back-feeding built in but if you wanted to install more we offer # RM-790 or # RM-690. To wire up the 4-way, that...
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  • What is the Difference Between the EZ4 and EZ5 Base Plate Kits for a 2014 Jeep Wrangler Unlimited
  • Since both the EZ4 # RM-521448-4 and EZ5 # RM-521448-5 base plate kits fit your 2014 Jeep Wrangler Unlimited and have removable draw bars there really doesn't seem to be much of a difference at first glance. However, there are some significant differences that are important to take note of. The EZ5 kit is easier to connect your Falcon tow bar to but does not allow the use of the anchor brackets for sterling cables. Sterling cable anchors will have to be attached to the frame or welded...
    view full answer...

  • Recommendation For Flat Towing 2009 Jeep Wrangler Behind RV
  • Yes, either braking system will work. Both the Blue Ox Patriot, Item # BRK2019, and the Roadmaster InvisiBrake System, Item # RM-8700, are good options. Both will need power connections so you can connect the Patriot II with a 12V Outlet Kit like Item # RM-9332 and the InvisiBrake will connect directly to the battery. Of the two, I recommend the Roadmaster InvisiBrake System, Item # RM-8700, because it is a one-time install and then you are good to go. Because you will need to...
    view full answer...

  • What's Needed to Install Roadmaster Even Brake in 2007 Jeep Wrangler
  • For your 2007 Jeep Wrangler Roadmaster recommends the Stoplight Switch Kit part # RM-751452 and the 12 volt outlet kit part # RM-9332 when installing the Roadmaster Even Brake part # RM-9400 and you'd be set.
    view full answer...

  • Best Flat Towing Setup for a Jeep Wrangler Unlimited with D-Ring Bumper Mounts or OEM Rubicon Bumper
  • To setup any vehicle for flat towing the basic parts that you need are a Base Plate Kit, Tow Bar, Safety Cables, Vehicle Tow Bar Wiring, a Supplemental Braking System, and most likely a High-Low Adapter. Since your 2014 Jeep Wrangler Unlimited has the 3/4 inch D-Ring bumper mounts you won't need a base plate kit. Instead you will need to use the Adapter for Jeep D-Ring Bumper Mounts # RM-035 with a Roadmaster Tow Bar. I recommend using the Roadmaster Falcon 2 Tow Bar # RM-520 as it is...
    view full answer...

  • Recommended Base Plate Kit and Other Parts to Flat Tow a 2008 Jeep Wrangler with Warn Front Bumper
  • Your Warn off-road bumper has shackle mounts. If the mounts are 3/4 of an inch thick you can use the adapter # RM-035 or if they're 1 inch thick you can use # RM-035-1. Both adapters will work with your Roadmaster Falcon 2 # RM-520 with no problem at all. If you don't already have them you'll also need safety cables, wiring, a braking system, and likely a high-low adapter to flat tow the Jeep. The safety cables I recommend at # RM-643. They're coiled which helps keep them off of...
    view full answer...

  • Recommendation For Supplemental Braking System For 2014 Jeep Wrangler Sport
  • Both the SMI Stay-IN-Play DUO Supplemental Braking System, Item # SM99251, and the Roadmaster InvisiBrake Supplemental Braking System, Item # RM-751452, are confirmed fits for your 2014 Jeep Wrangler Sport. Both do the same thing in basically the same way. Where there is a significant difference is the installation. Our installers prefer the SMI Stay-IN-Play because it is a quicker and easier installation. Because of the easier installation process, I recommend the SMI-Stay-IN-Play...
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  • Flat Towing 2010 Jeep Wrangler Sahara
  • First, you will want to make sure that your 2010 Jeep Wrangler will not exceed your towing vehicle's maximum towing capacity. Generally, when flat towing, you want your tow vehicle to weigh twice as much as the vehicle being towed. You will also want to check your owner's manual for instructions on recreational towing for your vehicle. If you find it is safe to tow your Wrangler behind your car, then you will need a base plate kit, tow bar, braking system, tow light wiring, and wiring...
    view full answer...

  • Is a Stop Light Relay Needed when Using the Roadmaster Even Brake on a 2009 Jeep Wrangler
  • The stop light relay, # RM-88400, is included with the Even Brake, # RM-9400. You will need to use the stop light switch kit, # RM-751452 according to Roadmaster. This kit will alert you when the vehicle brake pedal is being pressed. A 12 volt power supply, # RM-9332, is also recommended. To determine if a brake light relay is needed to properly wire your towed vehicle, answer the following questions. Are you using a supplemental braking system that depresses the brake pedal in your...
    view full answer...

  • Installation of Roadmaster Even Brake Supplemental Braking System on 2011 Jeep Wrangler
  • The ICX Transmitter is included with the Roadmaster Even Brake System # RM-9400 and plugs in with the included cable. The Stop Light Switch # RM-751452 will then plug into the ICX Transmitter after you install the switch in the bracket. I've attached a video of the Evenbrake and a stop light switch being installed into a Grand Cherokee. The stop light switch is a different part number but the process is the same.
    view full answer...

  • Parts Needed to Flat Tow a 2008 Dodge Ram 1500 or 2009 Wrangler Using a Roadmaster Falcon 2 Tow Bar
  • It sounds like you have a Falcon 2 Tow Bar # RM-520 that came with your Class A motorhome. The Falcon 2 is rated up to 6,000 pounds so you'll want to make sure your Ram doesn't exceed that. Depending on how its equipped it very well may. Also, make sure your RV is rated high enough to tow the Ram. What you need on your 2008 Dodge Ram 1500 is a base plate kit that will connect to the tow bar. If your truck is a MegaCab # 277-1A will work for you and if you the truck isn't a MegaCab...
    view full answer...

  • Parts Needed to Tow a 2007 Jeep Wrangler with Rugged Ridge Bumper Behind a Motor Home
  • First, for your 2007 Jeep Wrangler with the Rugged Ridge bumper, there is only one base plate kit that will fit. You will need Roadmaster base plates # 1437-3. The bumper part number will have to be 11540-10 or 11540-11. If it is a different part number then none of the base plates will fit. I have included a link to the instructions to the right. On these base plates you can only use Roadmaster motor home mounted tow bars. I recommend the Falcon 2, # RM-520, that you mentioned. It is...
    view full answer...

  • Troubleshooting Even Brake Portable Proportional Braking System On 2015 Jeep Wrangler Unlimited
  • I called my contact at Roadmaster about the # RM-9400 and the troubleshooting message you keep getting. They told me that you need to check the green wire that is coming out of the # RM-751452 switch. You should only show current when the brake pedal is depressed. If you are not showing current, then the switch is probably bad or it has shorted out and needs to be replaced.
    view full answer...

  • Parts Needed to Flat Tow a 2011 Jeep Wrangler with Roadmaster Base Plates and Curt Tow Bar
  • In order to use the Curt tow bar # C19745 with Roadmaster EZ4 base plates # RM-521448-4 you would need to add adapter # RM-025 and also quick disconnects # RM-201 (to make the base plate arms easily removable). In addition to the base plates and tow bar you will also need safety cables, lighting, and supplemental braking to flat tow your 2011 Jeep Wrangler. For cables you can use # RM-643. The coiled design helps keep the cables off of the ground. For lighting the diode kit # RM-154...
    view full answer...

  • Can a 2008 Jeep Wrangler with Hard Rock Bumper be Flat Towed
  • We do not have a custom base plate kit that is compatible with the Rock Hard brand bumper on your 2008 Jeep Wrangler. However I may have a solution. Blue Ox makes a universal bolt-on base plate kit, # BX88230, that you may be able to use. It requires that the bumper be reinforced or modified to install. I have linked the instructions for you. If you determine this kit will work for you then you will need a compatible tow bar such as the Avail, # BX7420. It also comes with safety cables...
    view full answer...

  • Will the Roadmaster InvisiBrake System Fit a 2011 Jeep Wrangler
  • The Roadmaster InvisiBrake # RM-8700 can be installed in your 2011 Jeep Wrangler. Installation will be basically identical to the video I have linked on the 2013 Wrangler. For this braking system to work properly on your Jeep you will also need stop light switch kit # RM-751452.
    view full answer...

  • Providing Power to the Blue Ox Patriot from the RV to Flat Tow a Jeep Wrangler
  • The Blue Ox Patriot # BRK2019 operates on 12 volt power and can be connected using a 12 volt outlet kit # RM-9332. Also, to power the Jeep's lights you can use the diode kit # RM-15267. This includes the cord that will stretch between the Jeep and motorhome using the 7-way connector on the back of the coach. In addition you'll need a brake light relay # RM-88400 to keep the Jeep's brake signal from overriding the RV's turn signals. In addition, if the Jeep you decide on is a 2014...
    view full answer...

  • How to Find the Stop Light Switch on a 2017 Ram ProMaster 1500
  • In order to find the stop light switch or cold side of brake pedal on your 2017 Ram ProMaster 1500 to install a brake controller like the Tekonsha Prodigy P3 Trailer Brake Controller part # 90195 you will need to test each of the wires with a circuit tester like part # ALL640595 for the one that is only hot when the brake pedal is depressed. Unfortunately I do not have any information that tells me what color wire that is. If you cannot determine which is the cold side of brake pedal...
    view full answer...

  • Recommended Flat Towing System For 2014 Jeep Wrangler Sport
  • For your 2014 Jeep Wrangler Sport, I recommend the Roadmaster EZ4 Base Plate Kit - Removable Arms # RM-521448-4. This will work well with the Roadmaster Tracker Tow Bar - 2" Ball - 5,000 lbs # RM-020 that has a 2 inch ball coupler. For your tow bar wiring, I recommend the Hopkins Custom Tail Light Wiring Kit for Towed Vehicles # HM56200. This will give you a 4-way flat connection at the front of your Jeep. For your braking system which is required in most states, I recommend the...
    view full answer...

  • Roadmaster InvisiBrake Supplemental Braking System Charging Battery On Jeep Wrangler
  • The Roadmaster InvisiBrake Supplemental Braking System # RM-8700 does give the vehicle a constant maintenance trickle charge when connected to your motorhome if the running lights on the tow vehicle are on. This will make it so you do not need to disconnect the battery when in use. There may be other parts needed based on the vehicle you are towing for this system to operate correctly. For instance, most Jeep Wranglers will require a stop light switch kit # RM-751452. If you give me...
    view full answer...

  • How to Connect a 6-Way from RV to Flat Tow 2009 Jeep Wrangler
  • As you can see in the attached diagram, a 6-way should have 12V power and the other function is usually a brake controller output. I recommend checking your fuses to determine if one has blown and that is causing the 12V not to show power; your RV's owner's manual should have the fuse locations for you to take a look at. If you do need to run a wire you can do so from your RV's battery by using the right amount of 10 gauge wire # 10-1-1 with Heat Shrink Butt Connectors # DW05745-10 and...
    view full answer...

  • Will the Blue Ox Alpha Tow Bar Work with Currie Enterprises Jeep JK Tow Bar Mounting Kit CE-9033JK
  • Yes, I checked with Currie Enterprises and they do list the Jeep JK Tow Bar Mounting Kit CE-9033JK as being compatible with the Blue Ox Alpha Tow Bar part # BX7365 so you will be good to go. The Blue Ox Alpha is an excellent option for you because of its self-aligning design that makes for unhooking on unlevel terrain easy and it is made in the USA. I have attached a list of other parts you might need as well to complete your flat-tow setup. SMI Stay-IN-Play DUO Supplemental Braking...
    view full answer...

  • Supplemental Braking System and Other Parts Needed to Flat Tow a 2009 Jeep Wrangler
  • Unfortunately, flat towing a vehicle can be expensive because there a number of parts involved and many of them are pretty costly. From our experience the surge brake style supplemental braking systems are not up to par with the electric systems like the Roadmaster InvisiBrake # RM-8700. The braking power is just inadequate. Using the InvisiBrake will give you great, reliable braking and once it's installed you never have to worry about it. With your 2009 Jeep Wrangler you'll also...
    view full answer...

  • Is Stoplight Switch Required for Installing SMI Duo on a 2003 Jeep TJ Wrangler
  • I checked with Roadmaster and the Stoplight Switch part # RM-751452 that you referenced is not required for your 2003 Jeep Wrangler. With the SMI DUO part # SM99251 you will need to use the brake light relay # RM-88400 if you plan to use a diode kit for lighting like the part # RM-154.
    view full answer...

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Info for this part was:

Test Fit:
Joe V
Video by:
Andrew K
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Jacob T
Expert Research:
Adam R
Expert Research:
Jeffrey L
Video Edited:
Chris R
Photos by:
Zach O
Updated by:
Shelly K
Video Edited:
Zach D
Test Fit:
Shane H
Updated by:
Isabelle B

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