Kit allows up to 15 amps from your RV's battery to be used to maintain the charge of your towed car's battery while the car is being towed. Charge line connects to the 6-way or 7-way plug on your vehicle. Requires separate charge line in RV.
Features:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Shane: Hi, I'm Shane with etrailer.com. Today I'm going to walk you through how to install Roadmaster's battery charge line kit on your 2020 Jeep Wrangler Unlimited.Adding a battery charge line kit to your vehicle, in my opinion, is a must. Typically you're going to see them used on vehicles that are being flat towed behind a motor home. What it's going to do, it's going to allow you to charge your battery while the vehicle is being towed. I've been in a situation where I have been going on a road trip and we get to where we're going and the battery is dead. We had to find someone with a jump box to jump our vehicle.
It was kind of embarrassing. This is going to keep you from having to do that.What it's going to do, it's going to plug it into the back of your six pole plug. It's going to run up to your battery and allow you to trickle charge your battery from your motor home so that when you get where you're going, you don't have that embarrassing moment where you had to rely on somebody else to jumpstart your vehicle because it's dead.Another reason why this charge line is important is any vehicle that is being flat towed by law is required to have a braking system. That braking system has to get power from the battery. With your charge line being attached to your battery, your braking system, using that battery power charge line's going to maintain that battery charge again so you get where you're going.
You don't have to rely on somebody else to jump start your battery or jumpstart start your vehicle.The installation process on this is very simple. You're going to have one long red wire and you're going to have a circuit breaker. Six volt plug on the center pin. You're going to attach your red wire and you're going to route it up to your battery. What I did is ran it right up behind my passenger side headlight right up here.
You need to mount your circuit breaker, it's going to come with self tapping screws. Red wire going down to the plug goes on the copper post. Red wire going to your battery, goes through the silver post. When you cut those, they're going to come with ring terminals, add your ring terminals on, run your wire over. Add your second ring terminal, put it on the positive side of the battery, and it's as simple as that.
Once you get it installed, you're ready to go.Again, I'm Shane at etrailer.com. That's going to do for a look at and our walkthrough installation on the Roadmaster battery charge line kit on your 2020 Jeep Wrangler Unlimited.
Average Customer Rating: 4.8 out of 5 stars (204 Customer Reviews)
Kit allows up to 15 amps from your RV's battery to be used to maintain the charge of your towed car's battery while the car is being towed. Charge line connects to the 6-way or 7-way plug on your vehicle. Requires separate charge line in RV.I ordered all the parts required to safely flat tow out 2017 Jeep Cherokee Trailhawk from etrailer.com. The only part they didn't have was the Mopar Flat Tow Enhancement kit Jeep requires to flat tow this model. Ordering from them was great, the website is easy to use and I was able to locate all the pieces compatible with my specific vehicle. The expert recommendations help my decision choosing the right parts. I ordered from etrailer even though I found some of the parts on other websites a little cheaper. I chose to pay a little more because of all the effort etrailer has put into installation videos and guides. I was very pleasantly surprised to learn from etrailer that they have a price match guarantee! So my equipment consisted of the following Mopar Flat Tow Enhancement Kit (from Jeep) Roadmaster Battery Charge Line Kit for Towed Vehicles Mighty Cord 7-Way RV Style Trailer Connector - Trailer End WesBarg 7-Way, RV-Style Connector w/ 6' Long Coiled Cable Trailer End Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End Hopkins Custom Tail Light Wiring Kit for Towed Vehicles SMI Stay-IN-Play DUO Supplemental Braking System Roadmaster Brake-Lite Relay Kit for Towed Vehicles Blue Ox Alpha Tow Bar - Motor Home Mount - 6,500 lbs Blue Ox Base Plate Kit - Removable Arms Blue Ox Tow Bar Cover - Aladdin, Aventa LX, Aventa II The installation videos are great but not all inclusive. Take the time to read the instructions that come with the parts. This is a major project, I took about 30 hrs over a full week but as you'll see in the pictures I took s few extra steps to make a cleaner look. Some of those extra steps: The base plate install requires the bumper be modified cutting off a flange on each side, I spray painted this to prevent corrosion. In the install video of the baseplate on the drivers side they use an extra quick link (not included) to run the safety cable around the wiper fluid reservoir. I took the time to remove it and run the safety cable behind it. I didn't want our nice new vehicle to look like it can be towed so I played the brake away switch and 7 way trailer plug behind the license plate, so when not being towed our vehicle looks great! Some things to be aware of. The Brake air cylinder that mounts to the brake pedal with four bolts may need longer bolts, it did on our Jeep. Spend the money for weather tight heat shrink crimp fittings. The Hopkins wire harness was about 1.5 feet short to get to my plug location. Buy extra zip ties, electrical tape and split loom. I recommend reading all the various installation manuals and watching all the videos because the various components integrate together and if you install one at a time you'll be doing a bunch of extra work. The brake light relay is a real pain in the butt, not because of the hardware but because of the location of the brake light switch which is very hard to get to. Overall I am very happy with the products and how the installation looks. We haven't towed it yet but do not expect any problems.
Roy - 07/30/2018
This kit is perfect for a Diesel Pusher Chassis but incomplete for a Gas Puller Chassis. I have a Class A Gas Puller on a Ford F53 Chassis. The charge line must run from the battery in the front of the vehicle to the the 7 Pin Connector at the back. I had to purchase additional wire, connectors and zip ties to run the charge line from battery at the front of the vehicle, to the connector at the back. In my case that was 35 feet. Roadmaster needs to offer a kit for a Gas Puller Chassis with a longer wire and more zip ties.
Kit works well. Suggest longer lenght of wire provided with battery under passenger seat
It seems to work OK. Expensive for what it is, a simple sutoreset CB and some wire and connectors. I was disappointed that this was recommended for me to buy because there was a charge kit that was included with the Brake Buddy 3.
We are actively towing our jeep Cherokee and have never had a low battery. We leave the portable braking system hooked up for multiple days without a problem.
Good instructions and easy to instal tnx to Lori AB for putting my order together
I am glade the products are available. I am happy with the guick shipping & delivery. However, there are a couple of issues with the rectifier I received with the towed vehicle charge kit I recever for my Chev Spark. 1. 2 self tapping screws were included in the kit. However, there are no tabs on the rectifier for the screws to attach the rectifier to the car. 2. The posts on the rectifiers are to long for attaching one ring terminal. 3. There should be rubber or plastic cover for the terminals to prevent accidentally shorting them. Other then these issues, I am grateful for the kits, if they work as planned it will be great. One less thing to do when towing my Chev Spark. I hope these issues will help improve your product.
Bob L - 06/30/2020I got this product in order to hook up a way to charge my car being pulled by my A class motor home. The product was received the way it was described on the web site. I have yet to get it hooked up but I see no problem with this seemly it looks to be quite an easy project. I have ordered several items from etrailer and have never been disappointed with their items. i will order from them again.
Larry B - 09/20/2020Always 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.
Easy install. Keeps battery charged in my Jeep while towing long distances
Just plain works. Plenty of wire and loom to get to connector. Have extra zip ties handy. I installed at same time as baseplate which makes it much easier.
installation instructions were clear and very helpful, recommended if using a supplemental braking system to avoid having a dead battery in your tow vehicle when you arrive, also the possibility of your braking system and brake lights not working during travel
I bought and installed base plate and wiring on a 2018 Ford C-Max hybrid car. The wiring was a little complicated due to the hybrid setup on the car, however, everything worked out well. I have done this on several other cars I have towed behind my motorhomes. All products and help from etrailer.com was excellent. The video presentation was very helpful.
The instruction video was the biggest help. Because I’m very visual without that I’m not sure I could’ve done this. It turned out great and I’ve not had any issues in the last year.
This was an easy install. etrailer is the most helpful company I have ever dealt with. We are just setting up a Jeep Wrangler for towing so we are learning as we go at the DIY. Bailey was great with her knowledge and helpfulness.
I needed this fast for an upcoming trip. eTrailer had it in stock and got it to me quick. I used this to run from my toad's motorhome 6-pin feed receptacle to the toad battery to keep the battery charged (my Blue Ox Patriot brake gets power from the toad 12v plug). I towed it 1400 miles and it kept my battery at full charge! It came with all the parts needed, however the provided wire was JUST enough to run from below my Wrangler's bumper up to the battery. If your vehicle has a longer run to the battery, you may need to buy some extra 14g red wire, but its widely available at hardware stores. My Wrangler's thick steel engine compartment sidewall proved too much for the "self-tapping" screws provided for the circuit breaker, but I just drilled pilot holes with a standard bit. Instructions were very clear and installation was a breeze.
Have not had any problems with this device , I done research prior to buying it .
Installed as per installation video and all went great.
This product is exactly what I needed to keep accessory power in my vehicle while it is being towed.
This charge line kit has kept my Honda CR-V battery charged while under tow. The key must be turned to the unlock position so that the shift lever can be moved to neutral. This leaves accessories such as the GPS turned on. The charge line kit keeps my battery charged regardless of this drain on my battery.
it works as designed and is neatly inst alled
Works as intended. No issues or compla ints:)
Very easy to install
I have a battery charger cable from my RV to the towed car. My battery is in the rear so the instructions state I can attach the wires to the battery connector points up front. But then it says to attach the charger thing as close to the battery as possible. Question - Do I put the charging thing in the rear or the front
Mike L - 11/15/2018I installed this baseplate on my 2003 Honda CRV myself. It was a challenge for an inexperienced mechanic but successful in spite of that. Following the clear instructions, the unit fit well into the CRV chassis. Installing it myself has also given me confidence in towing that I may not have had by giving that task to someone else. I wired the CRV and RV 6 way and 7 way connectors including power to charge the CRV's battery while towing. After towing the car for several thousand miles, I am very satisfied with the base plate, tow bar, and installation.
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