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  1. Tow Bar Braking Systems
  2. Chevrolet
  3. Silverado 3500
  4. 2017
  5. Roadmaster
FITS 2017 Chevrolet Silverado 3500
Roadmaster InvisiBrake Flat Tow Brake System - Preset

Roadmaster InvisiBrake Flat Tow Brake System - Preset

Item # RM-8700
Our Price: $1,171.43
Tow Bar Braking Systems
Confirmed to Fit
2017 Chevrolet Silverado 3500

with adjustable pedals using RM-751463

without adjustable pedals using RM-751460

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To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Shipping Weight: 16 lbs
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Call etrailer.com at 1-800-940-8924 for expert service. We are your Chevrolet tow bar braking systems experts, and offer a great price. etrailer.com carries a complete line of Roadmaster products for your Chevrolet Silverado 3500 2017. Roadmaster InvisiBrake Flat Tow Brake System - Preset part RM-8700 from Roadmaster can be ordered online at etrailer.com. Complete tow bar braking systems installation instructions and technical support.
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2017 Chevrolet Silverado 3500 - Roadmaster InvisiBrake Flat Tow Brake System - Preset

  • Brake Systems
  • Air Brakes
  • Hydraulic Brakes
  • Pre-Set System
  • Roadmaster
  • Fixed System
  • Power Assist Brake Compatible

Plug-and-play: this permanent system gets you automatic braking with a one-and-done installation. Actuator box installs out of your way under the front seat. Adjustable pressure setting for comfortable braking. Charges car battery while towing.


Features:

  • Get automatic braking in your towed Chevrolet Silverado 3500 when you press the brakes in your RV
    • Cable pulls towed car's brake pedal smoothly down when the system activates
    • System activates only when RV brake lights come on: no false braking
  • Adjust braking pressure to suit the weight/size of your Chevrolet Silverado 3500 and avoid damage
    • Ranges from 5 psi to 80 psi
  • Plug-and-play
    • System automatically turns on when connected to motorhome
    • Components install permanently and discreetly
  • Charge your car battery as you flat tow
    • Trickle-charges constantly
  • Monitor your towed car's braking with LED that installs in RV's dashboard
    • Lights up when brakes are activated
    • Sounds alarm if the brakes stay on too long (approx. 20 seconds)
  • Made in the USA


Specs:

  • Compatible with hybrids and other cars with continuous-power-assist brakes
    • NOT compatible with Chevrolet Silverado 3500s with non-electric hydroboost braking systems
  • Actuator box dimensions: 8-3/4" long x 8-3/4" wide x 2-3/4" tall
  • Power draw: 6 mA - 10.8 amps
  • Maximum braking pressure: 80 psi
  • Limited lifetime warranty


Do I Need a Braking System for Flat Towing?

A braking system is a must when towing a Chevrolet Silverado 3500 behind your motorhome. Without it, the weight of the towed car can create a safety hazard, strain your RV's brakes, and affect its the warranty of both your car and motorhome. Most states legally require a supplemental braking system, so if you don't use one and you end up in an accident (which is more likely since your RV takes longer to come to a full stop), your insurance and liability headache just doubled. You also won't have any breakaway system; if there's an accidental disconnect, there's nothing to bring your car to a stop.


Pros of a Permanent System

The InvisiBrake is a permanent braking system, which means that it's a one-and-done. Once it's installed, there's no more setup that you have to do. When you plug in the power cord at the front of your Chevrolet Silverado 3500, the system automatically turns on. Just like that, you're ready to flat tow.


While the components are installed permanently in your RV and toad, they remain concealed and inconspicuous. None of them will interfere with normal driving, and most of the time they are invisible.


How Does the Roadmaster InvisiBrake Work?

This system will apply the brakes in your toad (towed Chevrolet Silverado 3500) every time you hit the brakes in your RV. It will detect the brake light signal from your motorhome and trigger the system to the settings you pre-programmed.


Adjustable Pressure Settings

Road Master Invisabrake - how to adjust the braking pressure

The braking pressure of the InvisiBrake can be adjusted from 5 psi to 80 psi depending on the weight/size of your toad and your preferences. A higher pressure will brake your car with more force - a good fit for a heavy Chevrolet Silverado 3500 - and a lower setting is good for a small Chevrolet Silverado 3500. 60 psi is the recommended default setting, but you can tweak it to suit your individual setup.


The adjustable pressure setting is also an important safety feature for a car with active or continuous-power-assist brakes, such as hybrids. A car with active/continuous-power-assist brakes has pressure in the brake lines even when the ignition is off, so a braking system could apply excessive pressure and potentially cause damage. By lowering the setting (20 psi is recommended), you can use the InvisiBrake with active brakes.


The pressure setting needs to be adjusted only once, during the initial installation, at which point you can test the system at different settings to determine which feels best. Once you have it set, it does not have to be readjusted, so your system is always ready to go.


Permanent, Out-of-the-Way Installation

Road Master Invisabrake installatiion

Most often, the InvisiBrake actuator box installs beneath the driver seat of your toad, neatly tucked out of your way. You can, however, install it anywhere in your car that's convenient for you, such as in the trunk, as long as you can still access the adjustment knob.


Road Master Invisabrake attaches to the pedal

A bracket and cable pulley will install on the arm of your Chevrolet Silverado 3500's brake pedal. This will not interfere with normal braking function and does not have to be adjusted or removed. There will be lots of wiring to do as well, with connections made to the battery, breakaway switch, and tail lights. But once it's done, your braking system is always ready to go.


This is a tough installation, with several points that need careful precision to get right. Depending on the Chevrolet Silverado 3500, it can be challenging to find a place to fit the actuator box, and you have to be sure the cable pulley will meet the brake pedal at the right angle to function properly. There's a good chance you'll be pulling up carpeting and removing panels to get the wiring and cable run. Check out one of our installation videos to see if this install is in your comfort zone! Otherwise you can take it to a professional to get it installed.



8700 Road Master Invisi-Brake Supplemental Braking System

Installation Details RM-8700 Installation instructions

Customer Satisfaction Score:


Customer Reviews

Roadmaster InvisiBrake Flat Tow Brake System - Preset - RM-8700

Average Customer Rating:  4.8 out of 5 stars   (231 Customer Reviews)

Plug-and-play: this permanent system gets you automatic braking with a one-and-done installation. Actuator box installs out of your way under the front seat. Adjustable pressure setting for comfortable braking. Charges car battery while towing.

by:

The braking system and the lights are working, one year after I bought them. However, I am towing a 2016 Keep Patriot, and about 2_500 miles after install, the system started making an annoying clicking noise when I enter the Patriot, which stops after about 10 seconds and then starts up again, usually a minute or so later, for another 10 or 15 seconds. etrailer first said that they had never heard of.such a thing, then said that there are otherwise comments for Keep Patriot owners on forums. Still have no.fix.

Also, at first I did not know that to store the tow bar, it must be pulled up so that the post fitting can moe to the position where it fits into the hole.in the smaii yellow bracket, which works well when used correctly. And store the coiled.wide in your tower vehicle.to prevent corrosion which will interfere with its function.



by:

Invisibrake on a 2014 Honda CRV
I’ve
been a carpenter all my life and recently finished building a custom car. After Watching the etrailer video (multiple times) it appeared to be a fairly simple installation, not so much, as getting up under the dash is very tight, mounting locations and access points are different and not much working room under dash.

1. It appears the length of the cable and air cylinder are shorter than when the video was made, so an alternate location for the cable clamp is needed. The cable direction needed to be at a 90’ angle to the pedal. . Removing all the carpet and insulation was a PIA to get a direct connection to metal. The cylinder mounted a few inches closer than the video showed and I used two clamps to attach it. The mounting point on the cable clamp ending up being behind the wheel well, so I used a couple of stainless steel bolts for attachment.
2. The hole location into the firewall was very difficult to get to. I was only able to drill a 5/8” hole. I couldn’t get my step bit in there and the brake lines are on the outside and didn’t want to risk damaging them. I just ran the power wires and vacuum line through this hole. I drilled another 3/4” hole in the floor at the back of the cylinder. I ran the plug for brake away and the lighting wires under the body and followed the lighting wires from the back to front. Covering all wires in a plastic loom
3. The plastic molding pieces required some trimming to fit the new wires and cylinder.
4. The video shows the box mounting directly though the removable carpet mat. (Not a good thing) I removed the mat prior to install and will have to modify it to reinstall.
5. All the wiring in the engine compartment and the plug was fairly straight forward and simple.
It all appear to work as it should. Testing seemed to work good.
I recommend making a new installation video.
When I ordered it, the Amazon price was lower and etrailer couldn’t match the pricing. Two weeks later the pricing dropped to match the amazon price ( lower by $150). Sad face..



2014 CRV Baseplate -Roadmaster 521567-5
The installation was fairly simple and the video explained it well. The bumper and grille were fairly difficult to remove and expect to break some of the clips. ( new yellow ones can be purchased on Amazon) . I would wait to replace the grille until all the plug wiring is complete. Just hind site.


2014 Honda CRV Brake switch relay. -Roadmaster 88400
Relay switch are really simple to install, but the location of the brake switch and the small wires made it really difficult.
But it works as it should



by:

This product was supposed to fit under the seat of my 2022 Chevrolet Colorado. It doesn't even come close. The power seat motors do not allow any room between the seat and the floorboard of the cab. I am returning it "Unused, Uninstalled and in the original packaging. I am being charged return shipping fees. I could understand if I just changed my mind but the product DOES NOT FIT!!! I ordered a replacement air brake unit that will fit. Why am I being charged return shipping for etrailer's mistake in compatability??

Etrailer Expert

Jenny N.

6/14/2023

You are welcome to return this InvisiBrake system however I wanted to let you know that while most of the time the InvisiBrake actuator box installs beneath the front seat of the towed car it does not have to be installed there. It can be installed anywhere in the towed car that is convenient as on as you can still access the adjustment knob.



by:
2016 Jeep Grand Cherokee

Good quality materials.
Fast delivery
Good
price.
Complicated install. 16 hours labor for me to install toad portion, including bulb kit. 8 hours to install indicator light/warning beeper in RV. Worth the one time effort for me to not have to set and remove floor mounted brake system each time I want to drive the toad.

2002 Jeep Grand Cherokee with electric drivers seat. Controller would not fit under drivers seat, installed in cargo area behind rear seat. Good instructions for install.

Kit included everything I needed. Due to controller placement, the controller power leads were not long enough. Air line to air cylinder connection was difficult to get right. Was not as "sure" as air line to controller. Took 3 attempts to get it to not leak.

Overall a good product, I expect it will last a long time and be very reliable.



by:

A little more difficult than others to install but definitely worth the money. The only thing I noticed is every couple of hookup’s you need to pump the brakes once to activate the system

Russell

6/3/2023

Works great however if there’s a short anywhere in the primary vehicles light wiring. It will randomly apply the brakes.



by:

I love the InvisiBrake system! It's permanent installation and flawless operation really simplifies the process of connecting and disconnecting the towed vehicle. I would definitely buy it again and recommend it without hesitation.



by:

I've always have a Invisibrake system installed on my tow vehicle as they work excellently and are not in the way.



by:

My Invisibrake system works excellent. I t was easy to install for anyone with a little mecanical ability. Love it



by:

Not using it anymore because the Ford Maverick we got it for, was upgraded to a Ford Ranger. It did not supply enough power to charge the battery. The charging option was one of the main reasons we bought this one. I think it is different for other cars. It was a little challenging to adjust the brake power. We switched to a portable solution for the Ranger.



by:

Intermittent brake application sticking on. 3 different times in 4000 miles but always seems to fix itself.

Dennis

10/13/2023

Still occasional compressor sticking on. Times out eventually after annoying buzzer alarm.

Etrailer Expert

Jenny N.

11/7/2023

@Dennis I reached out to Roadmaster and it could be a feedback issue from possible water and or corrosion especially if this is only happening when the RV and flat-towed vehicle are connected with the power cord. The best way would be to reach out to Roadmaster so that they can confirm the situation and components that are in play to better know what way they can help. I will email you the contact details.


by:

The installation went as planned. All parts fit and worked the first time.



by:

Etrailer was Awesome from start to finish. Vert efficient and made sure that i had everything I needed.



by:
2018 Jeep Wrangler

Realitively easy to install except for the brake indicator in the RV. The problem was in the 2018 Wrangler, getting the wire I needed ti splice int for the in-use indicator.



by:
2015 Jeep Wrangler Unlimited

The product arrived within a reasonable amount of time. Instruction for installation was pretty good between both what came with the kit and the video etrailer web site. For the most part the installation went well but there are a few things I would like to comment on, and they are:
1) The self tapping screws to install the control unit to the floor of my towed vehicle were too short to get through the carpeting and into the sheet metal with enough bite to hold. Instead I used longer 1/4 - 20 bolts.
2) The vacuum check valve came apart while I was pushing it into the brake vacuum line. I was able to not lose the rubber membrane inside and used super glue to put it back together. I tested it and is working fine but I did order another check valve to the tune of [a few extra] more dollars.
3) It would have been nice to have the etrailer video show something on where to hook up the "Monitor System" from the towed vehicle. It took some doing but I was able to locate the brake switch and tap into the cold side for the signal.

Although I haven't put any miles on this system yet my test of it went well.

Etrailer Expert

Rachael H.

9/1/2017

Thanks for the feedback and review Ken. I wanted to let you know that I have included a link to one of our installation videos and at about the 15 minute mark there are some details about installing the monitoring system in the RV.

Ken K.

9/1/2018

A year later and Im still in love with the Roadmaster tow bar & base plate and InvisiBrake braking system. We just got back from a road trip that started around Seattle down to Bryce canyon and back. The tow bar and brake system worked flawlessly, I could not be more pleased. Also, recently I traded in the first Jeep that I installed this system on for a newer Jeep. Knowing that I would be towing the new Jeep as well, I wanted to uninstall the base plate and brake system from my old Jeep and reinstall them on the new. The process went very well, actually faster than the first time I installed it. So, bottom line is that Im very pleased with this set up and would recommend it highly.



by:
2014 Honda CR-V

Installed in a 2014 CRV. Worst part was getting all the wiring and under the door sill trim panel and routed up through the firewall into the engine compartment, and getting the cable and pulley installed up to the brake pedal. Pretty crowded under the dash in a CRV (my ribs are still sore)! had to use a different clamp on the vacuum cylinder because I had to move it forward of where the video showed in order for the cable to reach the mounting location under the dash. Had to clamp it around the larger end of the cylinder and the supplied clamp would not fit around the larger diameter end. Maybe Roadmaster has shortened the cable? Haven't tested yet but have high hopes! I used the videos extensively, and couldn't have done it myself without them! Not bad for a 72 year old!

G.d.

8/23/2016

Excellent! Have used it towing my CRV on two 2,ooo mile trips since installation. Works very well



by:

Purchased this braking system and installed on 2005 Jeep Wrangler and towed for over 3000 miles with no issue. Uninstalled and reinstalled on a 2016 Jeep Wrangler this fall. By far, the best supplemental braking system we’ve ever used.



by:

2021 Ford Ranger. The installation is not really technically challenging, but there are a lot of steps and you need to twist yourself under the dash for quite a bit of it. The main installation comment I would have is assume you are going to drill a hole in the firewall for the wires/air hose. Using the existing grommets is more work/risk than it is worth. There were several videos, but none specifically for my vehicle and I would have liked the specific detail on the air connection. We have about 800 miles towing with it so far and it definitely it helps with stopping, plus the break-away safety is good peace of mind.



by:

delivered early and packaged as stated

Douglas

1/10/2024

No issues and everything works fine.



by:
2023 Ford Maverick

works perfect



by:
Jeep

Nice product and simple to install should be easy to use. I installed under the seat of my 99 jeep wrangler



by:

Works great after I finally got it installed (see review on wiring harness)



by:

This review is more for eTrailer than the product RM-8700, which is a great product as well. I will be submitting further reviews as I install the device.
If you want to work with a knowledgeable staff, one that actually listens to your needs and not a company that simply sells a product just to get numbers. Deal with eTrailer.
If your RV has any need these guys know or will find out (as long as its in their area of expertise) and get back to you. They carry great products, they ship as promised and they stand behind what they sell. I highly recommend eTrailer.

Guy V.

8/10/2020

Most excellent products and customer service. I had purchased a few different items from eTrailer and found that there were a couple of missing items. Without question or hesitation, they were in shipping and satisfying my problem. After I got into the project, I found the missing items and notified eTrailer of my error. I cannot say enough good things which describes the excellent customer service, product knowledge and assistance they offer their customers and potential customers.



by:

Happy so far. I wouldn’t say installation is difficult but it did take me some time. Unit just barely fits under the drivers seat of my ‘03 TJ so it is out of the way. Does take away leg room from the rear passenger but who rides in the back of a TJ right? I did have to fab up some spacers for the clip that holds the brake cable due to the fact that the firewall of my TJ has a ridge right where it needed to be mounted.



by:

Easy install



by:
2016 Jeep Wrangler Unlimited

It was not too difficult to install if you have basic mechanical and electrical knowledge. After a year owning it and using, I can while heartedly say this is an EXCELLENT PRODUCT. I never had a breakaway to really test it, thank God, but the peace of mind knowing it’s there is tremendous!

Doug S.

4/21/2020

Perfect operation still to this day!


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See what our Experts say about this Roadmaster Tow Bar Braking Systems

  • Will the Roadmaster InvisiBrake Release Air Pressure Over Time When Disconnected from Motorhome
    The air pressure in the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 will slowly release the pressure until it is down to zero when you disconnect your 2017 Ford Focus from your motorhome. It won't drop all of the sudden once disconnected. I reached out to my contact at Roadmaster who confirmed this.
    view full answer...
  • Availability of InvisiBrake Installation Video on 1998 Jeep Wrangler
    The closest thing we have is the installation of the # RM-8700 on a 2014 Wrangler which I attached below. Although it isn't exactly the same you can use it as a general reference coupled with the written instructions.
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  • Invisibrake Diode Installation Wiring Diagram
    The Roadmaster InvisiBrake Supplemental Braking System Item # RM-8700 requires diodes to function properly and to ensure protection for both the towed lighting harness and the vehicle's electrical circuits. If you have bulb/socket lights you need to make sure that it's grounded to the chassis otherwise the Invisibrake will not function. I've attached some info from the installation guide to help you with wiring in the the Invisibrake.
    view full answer...
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  • Wiring Diagram And Orange Wire Connection for Roadmaster InvisiBrake Supplemental Braking System
    The orange wire, see wiring diagram attached, is not used for the Roadmaster InvisiBrake Supplemental Braking System, RM-8700. Roadmaster added that wire when developing the braking system and found that it was not needed, so it is not used for installation at all. I attached an installation video that should help you with your installation also. If you look closely just after the 8:48 minute mark you can see the orange wire and that it was not used in the installation. We just bundle...
    view full answer...
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  • Will Trailer Brake Controller Interfere with Roadmaster InvisiBrake Supplemental Braking System
    The trailer brake controller in the cab of the motorhome won't interfere with the Roadmaster InvisiBrake Supplemental Braking System part # RM-8700. They are two completely separate systems which do not interact with one another. The trailer brake controller controls electric brakes and the supplemental braking system controls hydraulic brakes.
    view full answer...
  • No Monitor Light on Roadmaster InvisiBrake Supplemental Braking System
    I have attached for you below both a wiring diagram of the monitor light on the Roadmaster InvisiBrake Supplemental Braking System part # RM-8700 and troubleshooting steps from Roadmaster. If the light is not illuminating then you'll need someone to watch the brake pedal in the vehicle as you press the pedal in the motorhome to verify function. - Make certain the brake light fuse was replaced in the towed vehicle. - Make certain that the monitor wire patch cord between the two vehicles...
    view full answer...
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  • Factory PSI Setting for Roadmaster InvisiBrake
    The braking pressure that the Invisi-Brake System # RM-8700 that you referenced comes from the factory set at is the most universal setting that works for most applications, 60 psi. You will want to test your setup using the preset setting and compare the stopping power to how the RV stops without a vehicle behind it and adjust as necessary.
    view full answer...
  • Initial Brake Pressure Setting Recommendation for a Invisi-Brake System 8700
    The braking pressure that the Invisi-Brake System # RM-8700 that you referenced comes from the factory set at is the most universal setting that works for most applications. You will want to test your setup using the preset setting and compare the stopping power to how the RV stops without a vehicle behind it and adjust as necessary. For further info check out the installation instructions I attached to the right. If your brakes are smelling hot I would try backing the pressure off a...
    view full answer...
  • 2019 Ford Ranger Separate Brake Tee Install For Roadmaster InvisiBrake
    Thank you for your purchase from etrailer of the Roadmaster InvisiBrake Supplemental Braking System # RM-8700. I'm not quite sure what you mean by vacuum gizmos, but for your 2019 Ford Ranger, according to Roadmaster, the 452154-00 is needed, as your Ranger has a 5/8" vacuum tube that needs a separate brake line tee. I have added cut outs for you which show the process.
    view full answer...
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  • Is It Normal For The Breakaway Switch Of The Invisibrake To Still Work When Not Hooked Up To Tow
    Yes, this is exactly how the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 breakaway switch should work. You wouldn't have the key in the ignition when flat towing the vehicle either so that won't be a factor here. This system is going to have power from your Wrangler's battery and activates only when the stop lights on your motorhome are illuminated or if the breakaway switch pin is pulled. The only way to prevent it from activating would be to cut power to the main unit...
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  • Troubleshooting Roadmaster InvisiBrake Lack of Air Pressure
    I can certainly try and help you find out what the issue could be related to your Roadmaster InvisiBrake Supplemental Braking System # RM-8700 and its lack of air pressure. If it was working fine, the most likely cause is a loose hose, which would be something that would cause the air pressure not to build. Additionally, according to Roadmaster, this can happen if the pressure is set to maximum. If so, the needle will have rotated around the gauge and making it look like it is at zero,...
    view full answer...
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  • Recommendations for Installation Locations of Invisi-Brake Controller on a 2013 Ford Explorer
    You can install the controller basically wherever you think will work the best for you, it is not required that you put it behind the front seat like the video I attached shows, but you may find that installing it on the driver side of the vehicle will make the install easier. You could try behind the rear seats or even the cargo area. You might have to get a little creative, but you should be able to find a suitable location in your 2013 Ford Explorer.
    view full answer...
  • How Long Should the Installation of the Roadmaster InvisiBrake # RM-8700 Take
    I spoke with my contact at Roadmaster who said that it takes their install team about 5 hours to install the Roadmaster InvisiBrake # RM-8700. He said that if the dealer hasn't installed one before then it could take them longer though because their team installs it all of the time. Attached is a sample installation video on a 2014 Jeep wrangler and the written instructions for you to check out as well.
    view full answer...
  • Invisibrake Activates on Jeep When Started But Not Connected to Motorhome
    I discussed your issue with both my in-house installers and technical support at Roadmaster and they both came up with the same concerns. It is likely moisture and/or corrosion at the multi-pin connector at the front of your Jeep. I have attached a picture of a typical connector and would like you to note that it has a plate that attaches with 2 screws and a rubber boot behind it. If you take off the screws and pull it out, then pull the boot back you will expose the area where the individual...
    view full answer...
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  • Roadmaster Invisabrake Vacuum Line Install on 2017 Chevy Equinox
    I reached out to my contact at Roadmaster and he said that the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 has two fittings and one of them is designed to go between the brake booster and intake manifold and will fit right where you stated on your 2017 Chevy Equinox 6 Cylinder. I've attached similar install videos to assist.
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  • Compatible Towed Vehicle Braking Systems For The Roadmaster InvisiBrake Supplemental Braking System
    The page for the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 states "This product does not work on vehicles with a non-electric hydroboost braking system." meaning it will only work with vehicles with an electric hydroboost braking system. The instruction manual for the # RM-8700 states "If the vehicle does not have vacuum-assisted power brakes, it likely has hydroboost power brakes. If they are electric hydroboost, InvisiBrake will work. If they are standard hydroboost,...
    view full answer...
  • Trouble Setting Brake Pressure on Roadmaster InvisiBrake Supplemental Braking System
    I checked the instructions for the Roadmaster InvisiBrake Supplemental Braking System part # RM-8700, in order to set the brake pressure you must first pull the breakaway pin and then pull out on the knob. Then, rotate to the designed psi, reengage the knob, and reinsert the breakaway pin. I have attached a photo below with these instructions. If the brake pressure still fails to set, there may be a hardware issue and a warranty claim with the manufacturer would be needed.
    view full answer...
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  • Power Brakes Not Working After Removing InvisiBrake
    If your brakes are not working after removing the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 then it is very likely a break or other damage to the vacuum line so that's what you'll want to check.
    view full answer...
  • Operation of Roadmaster InvisiBrake Supplemental Braking System
    The Roadmaster InvisiBrake Supplemental Braking System, # RM-8700, has a controller that is vacuum-operated. It will send pressure to the air cylinder and the air cylinder will apply pressure to the brake system by pulling on the attached cable. Please note the attached product review and installation video.
    view full answer...
  • Supplemental Braking for Flat Towing a 1999 Toyota RAV4
    Most likely yes, but the Invisibrake was only test back to the year 2000 for the Toyota Rav4 so we don't know for certain if it would fit a 1999 model. Since there was a generation change in 2000 that makes it harder to know as well. I have a solution that I know will work well though. The easiest system to set up and use is the Blue Ox Patriot II # BRK2016, that applies the vehicle brakes in proportion to how much the tow vehicle is braking. This is the safest way to stop and it reduces...
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  • How To Install The Monitor Wire For The Roadmaster Invisibrake Supplemental Braking System
    The Roadmaster InvisiBrake Supplemental Braking System # RM-8700 monitor wire comes with "bullet" style connectors. The monitor wire will not connect to the brake light switch wire on your motorhome. It simply runs up to your dash for the light. On the vehicle side you'll tap into the brake light switch wire and then run it to the grill of your ram and connect to the motorhome side using the bullet connectors. If you have an empty terminal on your 6-pole and 7-pole sockets on your Ram...
    view full answer...
    Image 1 for
  • How Does the Roadmaster Invisibrake Shut Off
    The Roadmaster Invsibrake part # RM-8700 is designed to activate the towed vehicle brakes when the motorhome sends a signal back to the operating unit to brake. Once the towed vehicle is disconnected from the motorhome, the Invsibrake shuts off and no longer activates. This is one of the only supplemental braking systems that does not require turning the system off compared to other supplemental braking systems that need to be turned off or taken out of the vehicle each time you want...
    view full answer...
  • Where Does Roadmaster Invisibrake Vacuum Line Tee Attach on 2018 Ford F-150 EcoBoost
    We actually had the chance to install the Roadmaster Invisibrake # RM-8700 on a 2018 Ford F-150 EcoBoost just like yours and we installed the tee of the kit on the vacuum line closer to the intake manifold. If you fast forward to the 9:20 mark of the install video link I attached on this page our installer will walk you through exactly how to do this.
    view full answer...
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  • Factory Pressure Setting for Invisi-Brake System # RM-8700
    The braking pressure that the Invisi-Brake System # RM-8700 that you referenced comes from the factory set at is the most universal setting that works for most applications, 60 psi. You will want to test your setup using the preset setting and compare the stopping power to how the RV stops without a vehicle behind it and adjust as necessary.
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Used Picture for Roadmaster InvisiBrake Flat Tow Brake System - Preset

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