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Replacement Braking Indicator Light for Roadmaster BrakeMaster Systems

Replacement Braking Indicator Light for Roadmaster BrakeMaster Systems

Item # RM-300065-00
Our Price: $14.77
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Replace the indicator light installed in the dashboard of your RV that lets you know when your BrakeMaster applies the brakes in the towed vehicle. Includes mounting bracket. 1-800-940-8924 to order Roadmaster accessories and parts part number RM-300065-00 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Replacement Braking Indicator Light for Roadmaster BrakeMaster Systems. Accessories and Parts reviews from real customers.
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  • Reviews (39)
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  • Videos (2)
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Roadmaster Accessories and Parts - RM-300065-00

  • Tow Bar Braking Systems
  • Brake Monitoring
  • Roadmaster

Replace the indicator light installed in the dashboard of your RV that lets you know when your BrakeMaster applies the brakes in the towed vehicle. Includes mounting bracket.


  • Replaces the braking indicator light mounted in your RV that lets you know the brakes are activated
  • Includes mounting bracket
  • Works with BrakeMaster supplemental braking systems (RM-9000, RM-9100, RM-9060 and RM-9160)
  • Made in the USA

300065-00 Replacement Road Master Brake Master Supplemental Braking Systems LED Monitor with Bracket

Video of Replacement Braking Indicator Light for Roadmaster BrakeMaster Systems

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

Video Transcript for Review of Roadmaster Tow Bar Braking System Parts - Replacement Monitor Light - RM-300065-00

Ellen: Hey everyone. I'm Ellen here at and today we're going to be taking a quick look at the Roadmaster replacement LED display monitor for your BrakeMaster systems. This is going to be a replacement component for the supplemental braking system in your RV, and this is that little light that just helps to indicate that your brakes are being operated. So whenever this lights up, that'll let you know that somebody is hitting the brake or that the . not someone, but that your braking system is hitting the brake in your towed vehicle.So, I'm going to hook this up to power and grounds. We can take a look at what it looks like when it's illuminated.

My white wire goes to ground. Red wire goes to power. When I turn that on, my light comes on. After a while of this sitting on, it should start to beep as well, which lets you know that there's something that's laying on your brakes and that you need to go check it out. Something might've fallen or something's gone wrong and the brakes are staying pressed down all the way.

So that happens after a few minutes of that being illuminated, so we'll set that to the side for now.It also comes with a small little keeper, to keep that in place. There's two little kind of bump outs on either side of the light, so whenever you put this in place it kind of acts as a nut and keeps the tension on that. So this goes behind and then wherever this is mounted, that sticks out and that keeps it in place. So you actually have it like that with the sort of convex side going towards the surface to keep that tension on there. So if something happened to get marred somewhere along the way, maybe lost this piece or maybe lost this small keeper, this is going to be a direct replacement.

It fits for the BrakeMaster series supplemental braking systems, so that's going to be RM-9000, RM-9100, and RM-9060, and also RM-9160.It is going to be made in the USA. As far as our overall measurement, the light itself is about one and seven eighths inches, or one and three quarter inches long. The wiring is about six and a half inches long, so total it's six and a half inches long. The actual wiring itself is just about four and a half inches. Our small clip is about five eighths of an inch by a half inch.

Now, if you need any other parts for your supplemental braking system or for your flat tow system in general, we have a lot of options available here at Because remember, your braking system is only one main component out of five that you'll need for a safe flat tow setup. The other four are going to be your diode wiring, your tow bar, your base plate, and your safety cables if your tow bar didn't already come with them. You can find options and a lot of information for all of those items here at, so I would highly suggest you check them out.And I think this white is actually . It takes about seven minutes for that to start beeping. So, in the interest of letting you guys go and get on with your day, I'm just going to say thanks for watching and that's going to do it for our look at the Roadmaster replacement LED display monitor for the BrakeMaster systems. We'll see you next time.

Customer Satisfaction Score:

Customer Reviews

Replacement Braking Indicator Light for Roadmaster BrakeMaster Systems - RM-300065-00

Average Customer Rating:  4.9 out of 5 stars   (39 Customer Reviews)

Replace the indicator light installed in the dashboard of your RV that lets you know when your BrakeMaster applies the brakes in the towed vehicle. Includes mounting bracket.


We traded in our Allegro motor home and purchased a ENTEGRA Motor home.I went to Etrailor to try and purchase some items that I couldn't remove from the old Motor home, I found everything that i needed and it got delivered 2-days earlierthan expected. Thank You so much. Gary


Easy installation, just what I needed to complete the invisibrake installation.


Product should come with connectors.


I actually called eTrailer to find this part to equip an additional tow vehicle. The eTrailer rep was very helpful.


The items were just as represented and expected. There was a mix-up at the post office and etrailer responded above and beyond expectations by reshipping the items before the original items were returned to them, resulting in a very timely delivery.

Dale K.


Worked great! I wouldnt hesitate to purchase from you again.


Needed this next day and they made it happen, thank you!


Didn’t realized how critical this little LED light is, if you want to be alerted when the towed vehicle’s braking system has a problem. If you’re towing without it, you need to add one.


Could be cheaper solutions of led lights, but this works fine and is easy to install in a 5/16" hole. Only problem is that it doesn't come with the sticker that labels the light. Not sure why not. Mine was in a plastic bag and maybe it was missing the original label.


These little LED lights can be used for a variety of other things besides just a replacement bulb. Any circuit where you need to know if something is getting power.


I love the quality of the products I ordered. Customer relations was very good as well, they kept me informed and even though it took several weeks and etrailer had to wait on items to get to them, I was communicated to well. I know it’s important in who you deal within this day and time and you can trust etrailer.


Just what I was expecting with good delivery time at a reasonable shipping cost. Perfect replacement for the original part and brighter than the old part which was nice as it was easier to see in the daylight.


The part was a perfect replacement. It is still working flawlessly a year later.


It got here quick and it's an exact replacement for the original light that burnt out after 19 years.


Exactly what I needed. Worked perfectly. Good price and received promptly.


Works great ,easy to install ,was delivered way before expected ,service is great as always ,will do business again ,thank you very much


the part is exactly like the original and was received promptly


Thanks Teresa for suggestion on my set of springs. You are one of the reasons I like person-to-person orders and not a call center.


Simple install, works fine.


Great to work with!


Works well.


Works great arrived sooner than expected.


Works great


exactly as pictured. Fast delivery




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See what our Experts say about this Roadmaster Accessories and Parts

  • Availability of Installation Video for Replacement Roadmaster LED Display Monitor # RM-300065-00
    We don't have an installation video specific to the Roadmaster Replacement LED Display Monitor # RM-300065-00 but I have attached a video below of us installing the entire Roadmaster InvisiBrake System # RM-8700. You can skip ahead to around the 13:25 mark to watch just the process of installing the LED Display Monitor. I have also included the complete installation manual below that you can look through.
    view full answer...
  • Replacement LED Display Monitor for Roadmaster BrakeMaster
    From your description it sounds like what you need is the RoadMaster Replacement LED Display Monitor for BrakeMaster Systems # RM-300065-00 which will work with your Roadmaster BrakeMaster Braking System for RVs w/ Air or Air Over Hydraulic Brakes # RM-9100.
    view full answer...
  • Replacement LED Display Monitor for Roadmaster InvisiBrake Braking System
    Yes, the Roadmaster Replacement LED Display Monitor # RM-300065-00 will work on your InvisiBrake System # RM-8700. This same part is used on both braking systems so it will be a direct replacement. The white wire from the LED is just for ground and the red wire is for power. I have attached a wiring diagram from the installation manual that you might also find helpful.
    view full answer...
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  • Should LED for InvisiBrake Supplemental Braking System Light Up Each Time Brakes Are Applied
    The LED Display Monitor for BrakeMaster Systems # RM-300065-00 should light up each time you brake with your motorhome as the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 is supposed to activate when the brake lights on your RV are illuminated. If the LED doesn't hardly light up then I would make sure that your RV brake lights are working correctly and that everything is installed properly for the InvisiBrake on your 2015 Kia Soul. You may want to have the company that...
    view full answer...
  • Brakes Are Still Working With Roadmaster BrakeMaster But LED Display Light Not Coming On
    You'll need to test to see if there is power getting to the LED light, and for that you'd test the red power wire using Cordless Circuit Tester # PTW2979. Removing it from the dash just depends on how you got it in, but generally it is drilled into the dash, with the decal pressed over the hole, so you'd need to remove that to access it. If the light is not working you'd need to replace it with RoadMaster Replacement LED Display Monitor for BrakeMaster Systems # RM-300065-00.
    view full answer...
  • Is the Light that Shows Brake Activation Included in the RoadMaster BrakeMaster Second RV Kit
    Yes, I spoke with my contact at RoadMaster just to be sure and the LED Display Monitor for BrakeMaster Systems, replacement part # RM-300065-00, is included in the RoadMaster BrakeMaster Second RV Kit for Hydraulic Brakes, item # RM-98300, along with all of the parts needed for the RV.
    view full answer...
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  • 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...
  • 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...

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Info for this part was:

Employee Jacob T
Video Edited:
Jacob T
Employee Kathleen M
Installed by:
Kathleen M
Employee David F
Installed by:
David F
Employee Dustin K
Video by:
Dustin K
Employee Amanda K
Updated by:
Amanda K

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