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If you need to disconnect the battery to flat tow your vehicle, you're going to want this kit. It disconnects your battery with the push of a button - much safer and faster than doing it yourself - while keeping your towing accessories charged.
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California residents: click here
I just mounted this battery disconnect switch in a 2021 Ford Edge ST 2.7L to be able to tow the Edge flat. Even with the transmission park lock disabled, the vehicle's parking brake will engage if it senses motion. Ford's instructions are to remove the negative battery cable before recreational towing. That is not at all practical with this vehicle. The RM disconnect seems pretty robust, and I was lucky that the switch was in the "off" position so that I did not have any sparking while I was reconnecting the battery that was removed to run the small cable through the firewall to the switch. The etrailer installation video was very helpful. Now, why not 5 stars - first, I have not yet tried moving the Edge with the battery disconnect in the on position. More pertinent, though, is that Roadmaster's instructions are terrible and the packaging is not much better. It arrived in a box with the only thing not loose in the box was the hardware and the switch. The instructions show both big red battery cables as being labeled, but there was only ONE label and it was loose in the box. Fortunately the instructions (and also electrical/mechanical sense) showed which cable connects to the battery and which one connects to the vehicle battery cable. The instructions also say to use the two included bolts and nuts to mount the solenoid, but on the 2021 Edge, the only place to mount into metal was the engine side of the shock absorber mount. There is no way to access the ends of bolts to put nuts on.
Fortunately RM also included hefty self-tapping sheet metal screws that are not mentioned in the instructions - those are what I used to securely mount the solenoid. The only alternative choices I could find where mechanical disconnect switches that seemed to be more cumbersome and not as robustly made. I hope that this electronically activated switch will be more convenient and will hold up over time.
I had a little difficulty finding a good location for the solenoid, but finally found a spot on the radiator bulkhead. Since the photo was taken, I have added silicone boots over all of the solenoid connections.
I highly recommend this battery disconnect for the 2024 GMC Sierra Denali 1500. The electronic parking brake requires the battery to be disconnected while flat towing. GM should have made the vehicle software to not apply the brake when in Tow-mode, this makes it easy to accomplish removing battery power. I mounted the solenoid inside the passenger front quarter panel near the battery to keep the power cables as short as possible. The solenoid must be installed in the vertical position. I chose to mount the actuator button inside just above the OBD-II port under the steering column. Easy access from the driver seat but not visible or in a place that could be accidentally pushed. If you frequently flat tow the GMC/Chevy with electronic parking brakes, this is a must have!
I installed this item, along with the whole towing package. Turned the key and nothing! Checked all the connections then got my volt meter out. Voltage seemed OK but continuity was all wrong. After double checking the wiring diagram, I discovered the battery cables were labeled backwards! Re-connected according to the diagram instead of labels and everything works great.
This battery disconnect is awesome. With just one push of the button it disconnects your positive post. Another push and it is reconnected. I installed this on a 2023 Trail Blaze and one other time on a 2023 Chevrolet Colorado Pickup.
The battery disconnect is a game changer in towing behind our RV. No need to disconnect a battery cable every time we hook up the towed vehicle. A push of the button and the battery is disconnected. Product was shipped direct to our installer in a timely manner. Price was fair.
Excellent product, not as difficult to install as I first thought just had to fabricate a bracket for my 2024 Canyon. Great service from trailer also. Arrived on the date they said which is great considering I am in the eastern most part of Canada.
Brooke M.
5/30/2025
So happy to hear that, John! An on-time delivery is about as exciting as one that is early-especially since it seems like things are delayed all the time haha. Which province are you from?
The battery disconnect installation instructions were clear and the installation went well in my 2018 Chevrolet Colorado ... in spite of the kit missing a few pieces like a second star washer for connecting the two battery cables and the second piece of protective tubing. I covered the exposed energized solenoid terminals with electrical tape to prevent an potential inadvertent short in the future when working under the hood. Works as designed so far.
Mike
7/1/2020
I towed the Colorado from Maine to Arizona last winter and the battery disconnect worked well for the entire trip. It made preparing the truck for towing and driving very easy!
I received the Roadmaster remote battery disconnect in a timely manner and had it installed in my 2016 Chevy Colorado by a local RV dealer. I used it for the first time this week and it worked like a charm. I didn't lose any of my preset radio stations or any other data that I know of. Pushing a button on the dash is a lot easier than disconnecting and reconnecting battery cables.
Robert M.
9/9/2017
Still working just fine.
The RM-766 is a solid piece of hardware and comes with absolutely everything required for the install, right down to the "Tow" and "Drive" stickers for the switch. I use it to disconnect the battery in my 2016 Ford Edge 3.5L AWD, to help make it flat towable behind my RV. It works great and I do not have to open the hood and mess with battery cables while travelling. I like it.
Herbert M.
7/13/2018
There have been absolutely zero problems with this switch so far. Works like a charm.
As always, I needed a host of devices to set up our new Toad, and etrailer was the perfect choice! Lot of product, in stock, for a decent price, and shipped quickly! HIGHLY recommend
Trailer install videos are awesome!
Works great!
E-Trailer did a great job and very professional!
Highly recommend!
A bit of work to install but we saved $2,500 on labor doing it ourselves.
Fairly easy install. Routing the wiring is the most time consuming part. I would've liked to have had heat shrink terminals sent instead of just crimp terminals but overall its a great product so far!
(Also, I would recommend using a brown wire to link the lighting together in the rear as opposed to the white wire that is recommended in the instructional video, to keep everything clear for anyone who may work on it in the future)
Excellent product. Good instructions. Works perfectly after a full year.
Scott
8/23/2024
My original switch appeared to be malfunctioning just a few weeks after installation.It would not consistently disconnect or connect the battery. This replacement switch resolved the problem.
I have a 2014 Silverado that I wanted to tow with my RV. In order to tow GM calls for the battery to be disconnected. This was the only product that I fond that would do what I wanted. It is slightly over priced in my opinion but it does the job. I have attached it to my aftermarket air box and ran the switch under the hood release. This way I can use the remote to unlock the doors when I am ready to unhook.
Works great.
The disconnect was just as expect. Good quality. Instructions and all needed accessories in package. I like the definite sound it makes when switching so you know its working.
This product works great for our 2018 Ford Explorer. It works perfectly for our application and allows us to easily disconnect the vehicle battery when we are preparing to tow the Explorer.
Easy install and works great no problems at all
Everything worked great.It was a super easy install. Thanks for all of your help.
Very easy install. Just take your time and follow the instructions.
Installed at another shop as had a 2 month wait for trailer to install it
Your people did and excellent job with this order.
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Dale
4/17/2024
Works great.