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Roadmaster Universal Brake Monitor

Roadmaster Universal Brake Monitor

Item # RM-9530
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Roadmaster Universal Brake Monitor Brake Monitoring System RM-9530
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Roadmaster Accessories and Parts - RM-9530

  • Tow Bar Braking Systems
  • Brake Monitoring System
  • Pedal Monitor
  • Roadmaster


  • Limited Lifetime Warranty

9530 Roadmaster Universal Brake Monitor

Installation Details RM-9530 Installation instructions

Video of Roadmaster Universal Brake Monitor

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

Video Transcript for Roadmaster Universal Brake Monitor Review

Today you're going to be taking a look at the Roadmaster Universal Brake Monitor. That's going to be part number RM-9530. Here's what our monitor is going to look like once we have everything hooked up. On the motor home side, it's just going to be this small box, and we're going to have a power cord. It's going to be completely portable, so if we need to move to another motor home or we're not using it, we can unplug it and put it in a storage compartment somewhere.What our monitor is going to do is it's going to monitor the braking activity on our towed vehicle. That way we can easily see it with these lights right here, and an audible alert to know exactly what's going on.

That way, it prevents us from having to look at our rear view camera looking for a small light that's going to be on the dash or the rear view of our towed vehicle. This is going to be a lot easier to see and we're not going to have strain in those high-light situations, the middle of the day where the light on the dash may not come on that bright.We'll have our lights right here close to us, and whenever we press on the brake pedal on our motor home, the yellow light is going to come on underneath brake letting us know that the towed vehicle's brakes are applied. When we release them, the light will go out, letting us know that the brakes are released on the towed vehicle. The middle light is going to let us know if there's a breakaway. In the event that our towed vehicle we're to disconnect from the motor home in an emergency situation, we're going to hear an audible alert and have that breakaway light come on letting us know immediately that there's a problem.One of the nicest things about our monitor system is that it's going to be universal.

It's going to work with any motor home, so long as you have a 12 volt power source. We're going to have a similar style monitor that's going to stay on the car. That's going to send a signal to the receiver. The transmitter on the car is going to have a total of four wires that we're going to need to connect. One's going to be power.

One's going to be ground. One's going to go to our breakaway switch, so it knows if there's a breakaway, and one's going to be connected to the cold side of the brake switch.Our brake monitor is going to rely on the movement of the brake pedal rather than the movement of the actuator. That way, we get a true brake reading, so even if something we're to fall on our brake pedal and move it just a little bit, we'll have an alert on our monitor inside the motor home letting us know exactly what's going on. Our monitor system is going to work with all braking systems. Just keep in mind you may need a stoplight switch to get that brake signal to the monitor.So, if you're looking for an easy way to monitor the activity of your braking on your towed vehicle, our monitor system is going to be an easy way to do that.

The fact that it's portable from motor home to motor home is a really nice thing, especially if you tow with different motor homes. Here's everything our brake monitor is going to come with. It's going to come with the sending unit that's going to mount on the car, the receiver that's going to mount in the motor home so we can know what's going on, and it's going to come with all the necessary wires and connectors to get it installed.The way you're going to be able to tell the difference between the two monitors is the motor home one, if we look at the bottom here, it'll have a plug and that's going to be for the power source that we're going to plug in. This'll plug into the monitor itself, and then we'll plug the other end into a 12 volt power source on the motor home. Now, on the vehicle monitor, you'll notice that that small plug isn't going to have anything in it. Instead, we're going to have this large plug in the center.That's going to plug our harness into, and then on the end of our harness we're going to have four wires. Our black wire with the ring terminal is going to be our ground wire. Our blue wire is going to hook up to the brake signal from the vehicle. Our red wire is going to be our power source, and then our yellow wire is going to hook to our breakaway on our braking system.Now, as far as power goes for the towed vehicle's side, we're going to have a few different options. We can use a fuse tap and get power, but keep in mind this is going to have to have constant power. So, you don't want to use a timed power source. When the vehicle is off, it'll lose power. Or we can wire it directly to the battery using a fuse holder. That'll finish up your look at the Roadmaster Universal Brake Monitor, part number RM-9530.

Customer Satisfaction Score:

Customer Reviews

Roadmaster Universal Brake Monitor - RM-9530

Average Customer Rating:  4.9 out of 5 stars   (7 Customer Reviews)


Installed on my toad, behind my 40' Palazzo. It is a good 50' from RV driver's seat (where the receiver is velcroed) to the toad's driver seat (where the transmitter is velcroed), but signal is immediate and steady.

My toad's battery died and the transmitter/receiver became unpaired! I thought it was broken. Called Roadmaster, they had me fixed within 15 minutes. Basically turn off the unit, press the POWER button for ~15 seconds, then pump your brakes twice. Do this for both receiver and transmitter (I took my receiver to my toad to re-pair).


This is much better than cutting hole in the dash of the Motorhome and installing a light. I had it installed in less than 30 minutes. Invisibrake is the braking system used. The passenger side floorboard kick panel of my 2018 2 door Jeep Wrangler JL had everything right there power came off of Auxiliary switch package I ordered on the Jeep, direct wire to the battery. Ground is right behind the panel and the aftermarket wiring harness (the only one out there for JL I believe at this time) supplied the brake light function. I opted not to cut into the brake away switch wiring as I didn’t want to sacrifice the integrity of the wire itself.


Install was easy. However could not turn transmitter off. Had to call Roadmaster. There tech staff helped me figure it out.

works great!
Michael H - 07/17/2020


This should complete the installation of my Invisabrake


As always, on time, order correct and quality parts.


One week delivery. Easy to Install. Works Great !



See what our Experts say about this Roadmaster Accessories and Parts

  • Troubleshooting Flashing Red Light and Alert of Roadmaster Brake Monitor part # RM-9530
    Red lights flashing with the Roadmaster Brake Monitor part # RM-9530 with an audible alert indicates a breakaway is in progress. The yellow wire of this kit attaches to the breakaway kit wiring installed on the tow vehicle. When voltage is applied on this circuit the alert thinks a breakaway has occurred. You must have a miswire somewhere that is putting voltage on this circuit when you apply the breaks.
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  • Does Roadmaster Universal Brake Monitor # RM-9530 Work without Breakaway Kit Installed
    I spoke with my contact at Roadmaster and he informed me that the Roadmaster Universal Brake Monitor # RM-9530 that you referenced will work without a breakaway kit installed. Reason being is that under normal circumstances the breakaway circuit of this does not have any voltage on it and it's only when it sees voltage does it know that a breakaway system has been activated.
    view full answer...
  • Road Master Brake Monitor Alarm Settings
    When the Status light is flashing bright red and the Brake light is flashing yellow the towed vehicle’s brakes have been on continuously for 30 seconds (for example, at a long stop light). Pump the motorhome brakes to reset the 30 second timer that is present to give you a warning to help prevent brake failure on the towed. Alternatively, press the “Silence” button once and the timer will now alarm only after 60 seconds of continuous braking. If the “Silence” button is pressed again after...
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  • Road Master Brake Alarm Settings
    I called the manufacturer to verify and yes, Roadmaster Universal Brake Monitor, # RM-9530 is on a loop. So what you did to move forward from 30 to 60, then to 90 and then 120, move forward once more to return to 30 second setting. From the manual: "The “Status” light is flashing bright red; the “Brake” light is flashing yellow; accompanied with an audible alarm. The towed vehicle’s brakes have been on continuously for 30 seconds (for example, at a long stop light). Pump the motorhome...
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  • How Does Roadmaster Invisibrake Monitor Install
    For the Roadmaster InivisiBrake monitor part # RM-9530 you'd wire it to your Invisibrake by running the black wire to ground, the red wire to 12 volt power, the yellow to the breakaway switch, and the blue wire to the brake light switch. I also attached a link to install instructions as well as an install video for you to check out too.
    view full answer...
  • Recommended Monitor Light for Braking System While Flat-Towing
    If you are looking for a brake indicator light to use on your flat-tow setup I recommend the Roadmaster Universal Brake Monitor part # RM-9530. This unit simply plugs into the outlet in the dash on the motorhome and then wires into the towed vehicle so it can let you know each time the brakes are applied. There is no wiring on the motorhome side, just the towed vehicle.
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  • What Does Optional Adapter For Roadmaster Invisibrake RM-8700-9530 Do?
    I reached out to Roadmaster and the reason your Older Roadmaster Invisibrake # RM-8700 requires the # RM-8700-9530 is that it was made before the monitor 9530 was made, and the adapter has a built in microchip that regulates the voltage to the # RM-9530 that the newer Invisibrakes do automatically. Without using the adapter the Invisibrake can engage randomly causing quite a safety issue so I recommend using the adapter. If yours is damaged then just use the # RM-8700-9530 as a replacement. I...
    view full answer...
  • Brake Light Switch Wire Color on a 2018 Ford F-150
    The cold side of the brake light switch on your 2018 Ford F-150 should be a purple/white wire but I really encourage you to test it with a circuit tester.
    view full answer...
  • Universal Transmitter and Receiver for LED Functions with Brake Buddy Classic Supplemental System
    The Brake Buddy system is a manufacturer we don't carry, but it sounds like you simply want to know when your vehicle brakes are being activated so I do have a solution for you. You can use the Roadmaster Universal Brake Monitor # RM-9530 which will be an easy LED system to give you the information you are seeking. I've attached a couple of videos to assist.
    view full answer...
  • How To Install The Roadmaster Universal Brake Monitoring System In A 2013 Honda CR-V
    To install the Roadmaster Universal Brake Monitor # RM-9530 on your Honda CR-V you will want to first install the Roadmaster Universal Stop Light Switch Kit # RM-751000. This kit will have three wires, red (ground), black (power), and blue (brake signal). You'll want to run the red and black wires directly to the battery with the included inline fuse holder. Once this is installed you'll attach the blue wire from your stop light kit to the blue wire on your brake monitor. The yellow wire...
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  • Is There A Separate Monitoring System Available To Alert You When The Brakes Are Depressed
    If you're wanting a signal that the brakes are being applied in your towed vehicle, separate from the Blue Ox braking system you have then you could first install the Roadmaster Universal Stop Light Switch Kit # RM-751000. This kit will attach to your brake pedal and sense when it's depressed and send out a signal which you'll tie into the Roadmaster Universal Brake Monitor # RM-9530. The # RM-9530 is going to have a receiver for your motorhome that will plug into a 12v outlet and display...
    view full answer...
  • Motorhome Mounted Monitor Light for Towed Vehicle Brakes
    The SMI Stay-IN-Play DUO Supplemental Braking System part # SM99251 comes with a monitor light that will get installed in the windshield of the tow vehicle and will then illuminate when the brakes in the towed vehicle are applied. If you want something in your motorhome that lets you know when the brakes in the towed vehicle are applied you can use the Roadmaster Universal Brake Monitor part # RM-9530.
    view full answer...
  • Easy Way to Find Just Stoplight Circuit on 2015 Jeep Cherokee
    Since your 2015 Jeep Cherokee has the tow package it does have the brake signal present at the brake controller install port. What you could do to easily access just the stoplight circuit would be to plug in the install harness part # 3014-S to the brake controller port on your vehicle under the hood and then use the red wire for the stoplight circuit and you'd be set.
    view full answer...
  • Indicator Light Recommendation for Use with Brake Buddy Classic Brake System
    The Brake Buddy system is a manufacturer we don't carry, but it sounds like you simply want to know when your vehicle brakes are being activated so I do have a solution for you. You can use the Roadmaster Universal Brake Monitor # RM-9530 which will be an easy LED system to give you the information you are seeking. I've attached a couple of videos to assist.
    view full answer...
  • Does the Roadmaster Universal Brake Monitor Come with an Actuator Arm
    The Roadmaster Universal Brake Monitor # RM-9530 is just the monitor. It is designed to be used in conjunction with a braking system like the Roadmaster InvisiBrake Supplemental Braking System # RM-8700. The arm that you are seeing would be included with the braking system, not the monitor. Depending on your vehicle, there may be some additional parts needed. If you want to provide me with your year/make/model, I would be able to tell you if there are any additional parts needed to use...
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  • Is Additional Stoplight Switch Required When Installing Hopkins Brake Buddy
    The Hopkins Brake Buddy systems like the Stealth part # HM39530 that we carry come with a stoplight switch for the activation of the system. The brakes of the tow vehicle will have to apply for the system to activate and start activating the brakes of the towed vehicle. There would be no need to also install an additional stoplight switch. If you wanted a monitor to allow you to know when the brakes are being applied you'd then want the part # RM-9530 which gives you a monitor you can...
    view full answer...
  • Does a Monitor Light Come with the Second Vehicle Kit for RoadMaster BrakeMaster and Is It Needed
    In regards to a Roadmaster BrakeMaster System, the RoadMaster Second Vehicle Kit with BreakAway for BrakeMaster Systems part # RM-98160 which I think is what you have does not come with any sort of monitor light. However, this can be obtained with the RoadMaster Replacement LED Display Monitor for BrakeMaster Systems part # RM-300065-00. The monitor light is not required for proper functionality of system nor is it required by law to have one but I strongly recommend one as it could potentially...
    view full answer...
  • Installing the Roadmaster Universal Brake Monitor on 2013 Subaru Forester with Invisibrake
    I can certainly clear all this up for you and I was able to confirm this information with Roadmaster directly in regards to your 2013 Subaru Forester. When tapping into the breakaway wire on the Invisibrake # RM-8700 to complete the installation of the Roadmaster Universal Brake Monitor # RM-9530, you will want to tap into the thick yellow wire you mentioned; you'll just need to cut into the thick covering on the wire and make your connection. When it comes to the blue wire on the # RM-9530,...
    view full answer...
  • Recommended Parts To Flat-Tow a 2019 Jeep Cherokee Trailhawk
    I have attached for you below a list of parts I recommend using to flat-tow a 2019 Jeep Cherokee Trailhawk. Roadmaster Direct-Connect Base Plate Kit part # RM-521451-5 (Easiest To Use) Roadmaster Nighthawk All Terrain Tow Bar part # RM-676 (Includes Safety Cables and Umbilical Cord) Roadmaster Universal Hy-Power Diode Wiring Kit part # RM-154 (Cleanest Install Look) Blue Ox Patriot Portable Braking System part # BLU37TR (Easiest Install) Roadmaster Battery Charge Line Kit for Towed Vehicles...
    view full answer...

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