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Replace the patch cord for the monitor of your Roadmaster InvisiBrake flat tow brake system (RM-8700).
Features:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Have you ever used an InvisiBrake before to flat tow a vehicle It's a nice braking system. We don't have to worry about setting anything up. We can get in and we can just start going. And especially it's nice since we have that monitor light that's going to alert us when our braking system's working on the dash and side.Well that monitor light is only going is if we have this patch cable hooked up. But let's face it, this is pretty easy to lose and it's pretty small. So chances are once you unhook it, you can't remember exactly where you put it.
It is very easy to lose or misplace.Don't get me wrong, our patch cord is not going to prevent our braking system from working. It still will work. However, we're not going to have the benefit of having that monitor light in our motor home, letting us know when the brakes are activated.Now our patch cable is going to be identical to the one that originally came with our InvisiBrake. It'll be a male connector that'll plug into our core that's on the front of our towed vehicle. We can run it along our tow bar, and we can plug it in on the motor home side.
Then we'll be able to get that signal whenever our braking system activates.Now the cable's going to be 78 inches long. So once our tow, those arms extend out and gets into the towing position, we'll have plenty of slack. But at the same time, if you're worried about it dragging the ground, what I like to do is if your tow bar has these channels, you could run it through the channels. Or if it doesn't, what I also like to do is just take a zip tie or so and zip tie it to my umbilical cord for my lighting. That way it'll be right there next to it, and it's a lot harder to lose.And now that we have that replacement patch cord, I don't have to worry if my braking system's coming on or not, because I can just look down at my dash and see when the light comes on, that it is activating, and have that peace of mind knowing exactly what's going on with my towed vehicle behind me.So if you lost your patch cable or you're worried about losing your patch cable, you can always pick up a replacement on here at etrailer.com, and you can keep it in your glove box so we have that peace of mind.But again, our patch cord is going to make sure that the monitor light inside of our motor home is going to work on our InvisiBrake, and we can have confidence when we're towing our vehicle down the road.So that'll finish up your look at the Roadmaster InvisiBrake replacement patch cable for the monitor light..
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews

Guy V.
7/31/2020
My pickup hasnt past me yet We have done a lot of travel over the past year and I am extremely pleased with the RoadMaster products. Our toad pickup is exactly where it should be, behind me. No sway, no problems so I am very happy

Mike L.
10/23/2025
Can you tell me which braking system you're using?

Charles
12/10/2018
a year later and still working fine.

Jack L.
5/25/2018
I bought this to have as a backup. Havent needed to use it yet

Natalie
4/30/2025
It works great! I always like to keep one or two extras, just incase the bullet gets stepped on or the wire get damaged.
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Gerald
9/7/2026
Just fine