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.
Speaker 1: Today we're going to take a look at the Roadmaster Battery Charged Line Kit for towed vehicles. Now this kit will allow 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, and it does provide just 15 amps to avoid overcharging. This will connect the battery to your 6-way or 7-way plug at the front of your towed car. Receives the power from your RV, so it does require a separate charge line. Now if there's no charge line present in your RV, it will require Roadmaster's Motor Home Battery Line, which is part number RM-156-75, which we do sell separately on our website, and is listed on this product page as a related product.This part will include everything laid out here on the table. The 14 gauge wire, the split wire loom, the circuit breaker, all the hardware and connectors to hook it up, a couple of cable ties to take up any slack in the wiring, and even a nice set of detail installation instructions on how to install everything.
This part is made in the U.S.A. That should do it for the review on the Roadmaster Battery Charged Line Kit for towed vehicles.
Average Customer Rating: 4.7 out of 5 stars (106 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 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 582538
Mike L - 11/15/2018
I 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. 681269
The product was exactly what I needed to keep the battery of my towed vehicle charged and it was very easy to install.I would recommend it for everyone that has a motor home and a tow vehicle. 544210
this does not isolate your battery from feeding back into your motorhome, this is simple a circuit breaker with a piece of wire and connectors. if it was a real kit it should have a protective diode to insure issues in the towed vehicle do not interfere with the charging system in your motorhome, as it is this is just a jumper between the alternator/battery in the motorhome and the alternator/battery in your towed vehicle. 477658
Ordered 3 parts: RM-156-25; RM-156-75 and DW05745-10. All received very quickly, as is the case when I purchase from etrailer. More importantly, I get a 'live person' when I call for assistance and the service rep. is always knowledgable ( not an answering service that "will have someone call back". Time was spent with me answering all my questions and providing suggestions and opinions when I as for them, related to my project. Great company, great service - keep up the great work! 693892
OK...did the job, but kit should include diode block. 682693
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. 410271
Roy - 07/30/2018So happy to have found this product. It will keep my Dinghy tow car battery charged up. The people at etrailer were very nice and helpful. 675094
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. 681635
899934
The video and instruction sheet were very helpful. The installation went well except the red wire provided was a bit too short for the installation in my 2018 Chevy Equinox. I spliced in some available wire. 897152
Works well, battery stays charged on long tow days. 893010
had ex a call what I needed and very fast shipping. 892648
I really like the way this base plate installed. Everything fit perfect and I like the look once it was completed. It's a snap to hook up with room for error. Our Jeep pulls like it's not even there. 898523
Delivery on time and accurate. 895360
This part was a suggestion, made by your sales rep to me. I followed their advice and it works perfect I would not be caught without it. 875941
Kit arrived in a couple of days and was easy to install. etrailer is always helpful with questions. 874728
Arrived quick waiting for base-plate and other parts to be delivered before opening. 871380
867395
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. 865074
The wires is too short 863028
works as advertised. pretty easy to ins tall 857696
857152
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. 855979
Works great! 850156
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