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Roadmaster Even Brake 2nd Vehicle Kit

Roadmaster Even Brake 2nd Vehicle Kit

Item # RM-98400
Our Price: $211.93
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Easily tow your other vehicle without having to install an entirely new Roadmaster Even Brake supplemental braking system. Works with Even Brake systems with a serial number 27,496 or lower. 1-636-747-1855 to order Roadmaster accessories and parts part number RM-98400 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Even Brake 2nd Vehicle Kit. Accessories and Parts reviews from real customers.
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Roadmaster Accessories and Parts - RM-98400

  • Tow Bar Braking Systems
  • Second Vehicle Kit
  • Roadmaster

Easily tow your other vehicle without having to install an entirely new Roadmaster Even Brake supplemental braking system. Works with Even Brake systems with a serial number 27,496 or lower.


  • Lets you use your Roadmaster Even Brake supplemental braking system (RM-9400) with an additional vehicle
  • Works with Even Brake supplemental braking systems with the black cable (serial numbers 27,496 or lower)
    • For an Even Brake system with the blue cable (serial numbers 27,497 or higher), you will need RM-98450 (sold separately)
  • Made in the USA

98400 Roadmaster Even Brake 2nd Vehicle Kit

Installation Details RM-98400 Installation instructions

Video of Roadmaster Even Brake 2nd Vehicle Kit

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

Video Transcript for Roadmaster Even Brake 2nd Vehicle Kit Installation - 2013 Jeep Grand Cherokee

Hey, everyone Shane here with Today I have a 2013 Jeep Grand Cherokee. We're gonna walk through how to install an Even Brake 2nd vehicle kit. The second vehicle kit is gonna be designed, so that if you have the even brake already, you already have and even brake and you're planning on towing a second vehicle within your family. You could even brake second vehicle kit allows you to use that main breaking system in each of the vehicles. One thing to keep in mind is depending on which model even brake you have will depend on the kit or the second vehicle kit that you would need.

There's going to be two kits. If you're even brake has a black wire, it's going to be, it's going to need one kit. If your even brake has a blue wire, it's gonna need a different kit. So make sure when you're hooking it up, look at the serial number that's on your even brake setup and use that serial number to get the proper kit for your second vehicle. As far as the installation process, pretty simple and straightforward.

It is gonna require for this vehicle, it is going to require a 12 volt outlet, for the braking system, because for the 2013 Grand Cherokee does require the battery to be shut off, which shuts off all power to any 12 volt outlets that are currently on the vehicle. You can find those here at etrailer. The second vehicle kit is gonna come with your breakaway switch and your tether as well as the cable that go from your breakaway switch inside to the transmitter. Keep in mind, running the wire from the breakaway switch inside the vehicle is not really a good way to do it. There's not really...

Grommets or factory wiring that are easy to get to. So, I found the easiest way to do it is on the passenger side. If you pull down the cardboard panel, right up in the corner, you'll see the power wire coming from the battery outside to the jumpstart post that's on, on the passenger side, under the hood. Right above it is all open, drill a small hole. And that's where you can feed your wires through.

Now we've gone over some of the features. Let's walk through how we got it installed. Start your installation. As I mentioned earlier, it's a good idea to have the fascia removed. It's gonna make it a lot easier or do it while you're installing your base plate. Your ICX transmitter is gonna be have to be mounted on the driver's side, so that the cable coming off of your braking system can plug into it. The green wire that's coming from your stoplight switch is gonna plug into the male spade connector and number one. So if you look on the opposite side where you have the red or the power and a ground wire, there's going to be a male spade connector there. The green wire coming off that is going to have to plug that again, power and ground. I routed these straight underneath the dash here, the center console, because my battery is underneath my passenger seat. Ran them underneath the carpet, and then added a ring terminal and then mounted them on the positive side of my post. And then I grounded the ground wire to the side of the, the battery compartment with a self tapping screw. Breakaway switches here. It's gonna come with the mounting hardware, your base plate, it's gonna have a bracket that you're gonna install during the base plate installation. That gives you a hole to mount your breakaway switch. And then all you have to do is run your cable. The cable that was inside is one piece, that has two, a plug on each end. One end is gonna plug into your breakaway switch. The other end is gonna plug into your transmitter. How I ran mine was from here, this factory wiring on our bumper beam, straight across. I zip tied it all the way here, went straight up behind my, past your head light, to here. And then inside the vehicle. You have, the power wire that runs right up to here, right up above it I drilled a small hole and I cut one of the plugs off, left a little bit of length, cut the end of the plug off. So that I only had to drill a small enough hole, or a big enough hole to get the wire through. And then I re-spliced the plug onto the end. Very simple it's going to have black and white wire in it, just connect the two back together once you're, once you've got your wire through. Now that we're in. All we have to do is mount the unit, up underneath the dash. We're gonna have a wire that we need to route from a brake light switch over to hook into it. And then your power and ground. Your kit is gonna come with a brake light relay. However, on this vehicle, we cannot use the relay because you can't tap into the factory brake wire. So we had to put a stoplight switch on it. A Stoplight switch is gonna have two wires coming off of it. It's gonna come with a green wire and a red wire to attach to one of those two wires. A red wire is gonna be full power. Green wire is going to be routed over to wherever you mount this. And you're gonna add a spade connector and it's gonna plug in right there. The other two wires on this unit, are gonna be your power and ground. This is gonna be for your breakaway switch. We can go ahead and plug in our breakaway switch. Just like that. We're probably run some tape around that just to make sure that it doesn't come disconnected. And then because our battery is underneath our passenger seat, I went ahead and extended my red wire and my white wire, because what I'm going to do is I'm going to route the wires underneath the carpet, along the inside edge and then over to the battery. Once we get to the battery, we'll have a fuse, fuse holder, add onto the positive side of the battery, and then basically put everything back together. We're gonna go ahead and extend my white wire as well, as I mentioned, I got my wires running underneath the carpet to my battery compartment here. And the way I did it, is I just used an airline tube that I had laying around. You can use wire hanger, anything that I'll go from here down into the box. I cut my white wire down, added the ring terminal. I'm just gonna take a self tapper and go right into the side of the box, in the sidewall and mount my ground. Added my fuse holder to the end of my red wire, ring terminal on the end, we wanna make sure that our fuse is not in the holder. When we attach it to the positive side of the battery, once we get it attached, we can go ahead and insert our fuses and make sure it's turning on. Once you have everything hooked up in the Jeep. You're gonna take your braking system, your even brake braking system, and it's going to have to be programmed to the new transmitter. Those instructions should be in your manual for your braking system. Next, we're gonna test out our system with our transmitter. I have my monitor for my motor home plugged in here. I don't have the pattern, the power completely disconnected here in the vehicle, just so I can test it out and make sure it's working together. There are blue wire coming from our braking system, plugged into the port on the bottom of the transmitter. We'll take our 12 volt plug for the system. We'll plug it into 12 volt outlet. We're gonna hit the test button. And what our system is doing is actually building up air pressure inside of the unit. You can see we've got a green light on our monitor for a motor home, it says testing is good, system is ready. We're all set up. Once you have all that done, you're ready to go. To look at and installation on the Even Brake 2nd Vehicle kit on a 2013 Jeep Grand Cherokee..

Customer Satisfaction Score:

Customer Reviews

Roadmaster Even Brake 2nd Vehicle Kit - RM-98400

Average Customer Rating:  4.8 out of 5 stars   (55 Customer Reviews)

Easily tow your other vehicle without having to install an entirely new Roadmaster Even Brake supplemental braking system. Works with Even Brake systems with a serial number 27,496 or lower.


Hooked up pretty easy. I have a 17 F150 and i already had a Hopkins brake light relay installed so didn't need to splice into the wiring like the directions had on here. Little confusing on the brake pedal wiring needing to hook into the ICX transmitter. I did it but I don't think it did anything in my install. I also ran a power wire all the way to the battery rather than fiddling with the fuse tap.

It has worked without failure for the several times I have used it
Ryan A - 01/05/2023


Works great to flat tow our wrangler using the the d- ring mounts


A good kit but overpriced. I would like to see the remote included, the full kit for a new setup is way over priced as well.


Very satisfied.


The written instructions were pretty good. I also used the 21 minute video on the etrailer site and it was great. Took me about 5 hours. I used a electrical knock out to place the two holes, 1 1/4", in the left and right frames. I. Really pleased with how things turned out.


The order went smooth. Said they would ship asap. Said if all goes right I'll have my order Monday. Low and behold all went so right I got stuff the Saturday before. Thanks for the help and service. Great as always. Kelly R


E trailer has excellent quality products! Excellent customer service! And very easy to work with and communicate with. They will go above what they need to do to help you with a product your looking for and stay prop of the issue with you till it’s resolved to your satisfaction! Can’t ask for anything more! Considering this crazy world we are living in today!
I would recommend buying from E-Trailer all the time
To anyone !


Gwen was very, very helpful.
Thank you


This wired into my Mini Cooper easily enough. The Breakaway Switch works as it should, however the brake assist does not work as the brakes in the motorhome are applied. Apparently the brake assist works from the "powered" brake switch relay and the switch in the Mini is not powered without the key on. I do not have brake lights or turn signals from the Mini either. I use remote magnet lights for turn and brake lights. I suppose that I could figure out how to make this work but with a 2.500 pound car it seems that I have enough brake power in the motorhome without the assist of the brakes in the Mini.


Competitive pricing yet very knowledgeable sales people. etrailer gives you more then other online retailers with a phone number you can call for information before buying.

A year now. Got to use it ony one time But, everything great so far.
Bud B - 01/30/2021


Good service as always.


The same product offered other places but at a lower price than most. It was slightly higher than the lowest price I found but with free shipping it beat everyone else by far. It arrived when stated. Communication between e-trailer and me was good. The instructions that came with the 2nd car kit was confusing but called Roadmaster direct and was helped to get the install done correctly. The product is of high quality. Good Job.


Just received and not yet installed. Instructions ok, but some of the wiring and connections are not included, a manufacturing deficiency, not etrailers. Also, mfg web site had very little info for my model of auto for locating brake switch wires. Have to find it on my own.


Product was spot on instructions on brake light relay switch...had to download it from roadmaster ..etrailer shipped fast but used surepost but it was free.. also etrailer has some good videos of install.


This was fantastic. Everything I needed to wire factory lights on my Jeep to the trailer plug on my RV. Quality products at a good price and prompt delivery. NICE!


Will follow up if any issues with install (but I doubt there will be). Quick delivery, excellent help from William B. Still waiting on some products to arrive, which I was expecting thanks to the great service I already mentioned. Product came well packaged with instructions and follow up email containing more helpful information. Recommend this company.


Always excellent customer service and product Information, i.e. written instructions and how to videos. I have ordered multiple times and products, and their service is always excellent.


Received the product and instructions. Now I have to figure out how to install it


great kit, has everything needed to install an even brake unit on my 2012 Jeep Liberty. The etrailer install video was very helpful


In the end it is 5 stars but I gave it 4 stars because a cable was missing. However, eTrailer instantly replaced it so I'm completely satisfied and the cable works fine.


Called and spoke to a representative and got everything I needed to set up my GMC Acadia for dingy towing. Great knowledgeable staff. I always can count on them.


I have not installed product as of yet but I am sure it will be great. I have purchased from etrailer before and have never been not satisfied. Keep up the good work.
Merry Christmas and GOD Bless.


Will be using on a 2014 Honda CRV. Product is as advertised. Great packaging and fast shipping at a low price. Can't be beat. Very satisfied.


Product was perfect and the service through etrailer was excellent. I will definitely use etrailer again.


Very easy install on my 1998 Jeep Wrangler. No issues at all

Show More Reviews

See what our Experts say about this Roadmaster Accessories and Parts

  • Even Brake Supplemental Braking System Interferes with Home Security System
    The Even Brake, # RM-9400, sends a wireless signal to the receiver in the motorhome hand held unit and that signal can interfere with other signals. It sounds like the unit is sending a signal either looking for the hand held unit or something similar. You will want to unplug the transmitter from the power source and Even Brake. With no power the unit should not be able to send a signal.
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  • Second Vehicle Kit Recommendation for Roadmaster Even Brake Supplemental Braking Kit
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  • Patriot BRK 2012 Breakaway Switch Routing Instructions
    When running the breakaway wire of the Blue Ox Patriot # BRK2012 there are two methods: Method 1: Through the firewall 1. Look for a pre-existing hole in the firewall, if no hole exists, drill a ½” diameter hole. Insert a grommet into hole. Note: Make sure not to damage any components on either side of the firewall while drilling. 2. Find a path for the cable through the engine compartment to the firewall. Use wire ties to secure the cable. Make sure to avoid any hot or moving engine parts. 3....
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  • Second Vehicle Kit For Roadmaster Even Brake with Serial Number 005227
    It sounds like you need the Roadmaster Even Brake 2nd Vehicle Kit part # RM-98400 since the serial number is lower then 27,496 you can use this kit as confirmed by Roadmaster.
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  • Installation Of Roadmaster Even Brake 2nd Vehicle Kit For 2007 Chevrolet HHR
    I have attached an installation video for the Roadmaster Even brake 2nd Vehicle Kit,part # RM-98400. This video explains how you run the wires for the breakaway kit as well as connecting the IXC terminal. When working with electrical connectors I recommend using dielectric grease like part # 11755. This keeps dirt and moisture out of the electrical connections and helps prevent corrosion. Although the vehicle is different, the installation should be similar for your 2007 Chevrolet HHR.
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  • Need Replacement Parts for Roadmaster Even Brake Supplementary Braking System
    You can absolutely move the Roadmaster Even Brake # RM-9400 to a different vehicle. If you don't want to remove everything from your current vehicle or if you just want the option of towing a second vehicle, then I recommend the Roadmaster Second Vehicle Kit # RM-98400. This kit includes a complete breakaway kit (wiring harness, cable and switch), the brake light relay, transmitter and instructions. This kit provides everything needed to complete installation of your Even Brake in your...
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  • How Does Roadmaster Even Brake Know When to Apply Brakes and How Hard to Apply Them
    The Roadmaster Even Brake part # RM-9400 uses two things to know when to start applying the brakes and how much braking power to apply. The ICX box of this kit attaches to the brake light switch of the towed vehicle which tells the Even Brake that it's time to start looking for braking action when the stoplights come on and then the inertia sensor of the unit senses how hard you are applying the brakes and puts a proportional amount of braking on the towed vehicle.
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  • Roadmaster Even Brake Supplemental Braking System and Second Vehicle Kit Fit with 2014 Ford Edge SEL
    The Roadmaster Even Brake 2nd Vehicle Kit # RM-98400 will work just fine on your 2014 Ford Edge SEL if you are using a previously purchased Roadmaster Even Brake System. The Jeep Patriot video on that page just shows one possible installation for reference, but it will work on your vehicle as well. If you were intending to purchase the braking system for your Edge and don't currently have one, then you will want the Roadmaster Even Brake Portable Supplemental Braking System - Proportional...
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  • Installing Replacement Breakaway Switch for Roadmaster Even Brake and Brake Pro Braking Systems
    I will be happy to explain the installation of the breakaway switch. First, mount the break away switch at the front of the vehicle, on the drivers side. Choose an area you can easily reach, with a surface of sufficient strength to hold the switch firmly in place, so that the break away pin (Figure 1) will pull freely from the switch. Mount the switch in a horizontal position, with the break away pin facing toward the motorhome. Ensure that the break away pin can be pulled freely away from...
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  • Parts Needed to Complete a Roadmaster Even Brake Supplemental Braking System
    Since you are missing some of the major components of the Even Brake system, what you will need is the second vehicle kit, # RM-98400 to ensure that you have all of the parts needed to use the Even Brake. The transmitter alone is just one piece you will need. You will also need the breakaway components, some wiring, and the brake light relay.
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  • How to Install the Roadmaster Even Brake 2nd Vehicle Kit # RM-98400
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  • How Does the Roadmaster Even Brake Supplemental Braking Send a Signal for Vehicle to Motor Home
    The Roadmaster Even Brake, # RM-9400, uses a wireless transmitter in the vehicle and a receiver in the motorhome. The Receiver lets you know the Even Brake is working properly by lighting up when the brakes are being applied and also notifies you when the towed vehicle battery voltage is low. The second vehicle kit that you referenced, # RM-98400, provides the wiring and transmitter for another vehicle so you can use the in-cab monitor and the same braking unit for more than 1 vehicle. I...
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  • Programming a Second Vehicle Kit to a Roadmaster Even Brake System
    Here's exactly what you will need to do to program ICX transmitter to the monitor of your Roadmaster Even Brake part # RM-9400. Press the Dim button on the motorhome monitor after plugging it in for about 6 seconds until the LCD reads, "receiver in learn mode." Release the Dim button and it should read "Learning ICX #1 --Advance OK." Select, "Learning ICX #2 Advance OK." Press the Test button on the Even Brake Touch pad control panel. It should begin a self-diagnostic test. Once complete...
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  • Second Vehicle Kit to Install a Roadmaster Even Brake in a 2004 Chevy Avalanche
    If you are looking for a second vehicle kit to use your Roadmaster Even Brake part # RM-9400 on a 2004 Chevy Avalanche the part # RM-98400 that you referenced would be the right kit. I attached an install video for this product for you to check out as well.
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  • Installation of Roadmaster Even Brake 2nd Vehicle Kit on Vehicle Using Magnetic Tow Lights
    A brake light relay is not required when installing the Roadmaster Even Brake # RM-9400 on a vehicle that will be using magnetic tow lights. I am attaching a copy of the instructions for the EvenBrake which details the process of installing the Even Brake 2nd Vehicle Kit # RM-98400 when there is no brake light relay installed. Essentially, if the Brake-Lite Relay was not installed — connect the “cold” side of the brake light switch to the terminal marked “1” on the ICX terminal. This information...
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  • Will the Roadmaster Even Brake 2nd Vehicle Kit Work By Itself
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    For your 2012 GMC Sierra you can't completely connect the Roadmaster 2nd vehicle kit # RM-98450 or # RM-98400 to the trailer brake controller wiring under the dash . You can get the cold side of the brake light switch at that location which is the factory blue wire with white tracer. It is not recommended to get power or other functions from those wires.
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    Basically, it will not work if you do not install the brake away part of the braking system. They are required by law and the unit is supposed to show an error if the break away is not installed. The indicator that comes with the Even Brake # RM-9400 is there to show you that the brake pedal of the vehicle is actually moving. The handheld unit allows you to adjust power and tells you if there are any errors. These items do not affect the lighting system needed between the RV and toad. The...
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  • Will the Roadmaster Even Brake Work on a 2001 Chevy Tracker
    If you already have a Roadmaster Even Brake # RM-9400 and want to move it between 2 different vehicles then you would use the second vehicle kit # RM-98400. But if you do not have any braking system then you would not install RM-98400 and instead would get the Even Brake # RM-9400. If you go with the Even Brake then a 12 volt power port, # RM-9332, is recommended because the one in the vehicle, if equipped, will not be active when the vehicle is being flat towed.
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    This means that the the Roadmaster Even Brake # RM-9400 is not getting a clear signal between the transmitter and the unit. If you can move the transmitter or main unit closer hopefully that will allow the signal to connect and get rid of the issue. If that does not work you'd need a new transmitter like with the # RM-9420.
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  • Difference Between the Roadmaster Even Brake 2nd Vehicle Kit 98400 and 98450
    The difference between the Roadmaster Even Brake 2nd Vehicle Kit # RM-98400 and the # RM-98450 comes down to a change in the Even Brake system itself. The correct 2nd vehicle kit will be determined by the serial number on your Roadmaster Even Brake Portable Supplemental Braking System # RM-9400. If your Even Brake has a serial number 27,496 or lower then you need the # RM-98400. This is also identified by a black cable. If your Even Brake has a serial number is 27,497 or higher then you...
    view full answer...
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