Roadmaster Battery Charge Line Kit for Towed Vehicles
(288 reviews)
Price: $36.57
In Stock
Roadmaster Battery Charge Line Kit for Towed Vehicles
Item # RM-156-25
Retail:$48.82
Our Price: $36.57
You Save: 25%
Orders above $99 qualify for Free Shipping
In Stock
- All Info
- Reviews (288)
- Q & A (0)
- Videos (81)
- Photos
- Why etrailer?
Roadmaster Accessories and Parts - RM-156-25
- Tow Bar Wiring
- Battery Charge Line Kit
- Roadmaster
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:
- Maintains the battery charge in your towed vehicle while the car is being towed
- Provides just 15 amps to avoid overcharging
- Connects battery to 6-way or 7-way plug at the front of your towed car
- Receives power from your RV
- Requires Roadmaster's motor home battery line (RM-156-75 - sold separately) if no charge line is present in your RV
- Includes 14-guage wire, split wire loom, circuit breaker, and hardware
- Made in the USA
- Limited Lifetime Warranty
156-25 Roadmaster Battery Charge Line Kit for Towed Vehicles
Installation Details
Video of Roadmaster Battery Charge Line Kit for Towed Vehicles
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Roadmaster Battery Charge Line Kit Review
Ryan: Hey everybody, Ryan here at etrailer. Today, we're going to be taking a look at the Roadmaster battery charge line kit for towed vehicles. The charge line's going to be a really simple kit. It's just going to consist of a little bit of wiring and the breaker that we have mounted right here out of the way. On the purpose of the charge line kit is to more or less trickle charge or maintain your battery whenever you're flat towing it down the road. And that's important because your braking system is going to use your battery power to operate whenever you are towing it.
And the last thing you want is to get to your destination and unhook and go to start up your truck and the battery be dead. But the charge line, you're not going to have to worry about that. It's going to maintain that battery life, that way you're not going to have to deal with trying to get some jumper cables from your motor home to here, deal with grabbing a jump box or even bothering someone else to help you out.We do get some questions asking about if the charge line kit is going to affect your motor home's battery, which is definitely understandable, but the answer is no. Since the charge line is going to get the power from the auxiliary power source at the seven-way plug, you're not going to have to worry about it stealing or robbing your motor home's battery power. So the way it's going to get that power, the current is going to run through your cable from the back of your motor home into your plug and the charge line wire is going to be connected to the back of the plug.
From there, your wires is going to run up to one side of the breaker and the breakers there to prevent the current or electricity from backfeeding so that'll kind of put your mind at ease, knowing you're not going to have to worry about that power backfeeding. With that being said it'll cross the breaker, come through this wire, and this is going to run and get connected to the positive terminal on your Ranger's battery.So overall really simple component, that's going to keep our battery charged and one less thing we're going to have to worry about, and that can really make a big difference whenever you're on vacation, going from relaxing to stressful if your battery does die. A charge line kit is going to prevent that. And that'll finish up our look at the Roadmaster battery charge line kit for towed vehicles.
Customer Reviews
Roadmaster Battery Charge Line Kit for Towed Vehicles - RM-156-25
Average Customer Rating: 4.8 out of 5 stars (288 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.
- RM-156-25
by: Jeffrey12/22/2021
have successfully completed the installation of the following items that I purchased from etrailer: > Nighthawk RM-676 tow bar > RM-524458-5 base plate > DEMCO Stay in play DM86VR > RM-152 diode wiring kit > RM-156-25 charge wire kit > RM-88400 brake switch relay kit I work slow but methodically. I had no issues other than the high degree of difficulty for a 68 y/o man working alone. This project exceeds the abilities of someone NOT mechanically inclined. There is also the need for some specialty tools. I found that feeding the wiring through the dash, firewall, and underbody was more difficult than installing the front baseplate. Overall, I am satisfied with the function of this installation. I am glad I did it myself rather than having it done. Tow vehicle: 2021 Entegra Emblem 36U Towed vehicle: 2018 Ford Fusion Platinum Energi
- RM-156-25
Roy - 07/30/2018
by: Roy07/24/2017
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.
Comments
Still very happy with our purchase. We’ve towed over 10k miles and have had zero issues with our tow setup. I’ve shared my experience with several other RVrs and recommended your company for their needs. Thank you,
Roy - 07/30/2018
- RM-156-25
by: Paul11/24/2021
Had it installed by my RV Service guy, and it’s worked great for us in towing our Jeep Cherokee with the Roadmaster Falcon 2 towing system!
- RM-156-25
by: John10/26/2021
The Roadmaster Battery Charge Line Kit was easy to install and exactly what I needed. thank you
- RM-156-25
by: Roy12/24/2021
The telephone support was excellent. I can't rate the product since it hasn't been installed yet.
- RM-156-25
by: Bill11/15/2021
Works great and allows me to tow with vehicle stability turned on; no more death wobble! Installation instructions were clear and it fit perfectly.
- RM-156-25
by: Michael04/07/2021
Kit works well. Suggest longer lenght of wire provided with battery under passenger seat
- RM-156-25
by: Peter05/17/2021
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.
- RM-156-25
by: Michael08/21/2021
I sincerely appreciate E-trailer for supporting any issue I encountered during my installation process. The staff courteously answered all of my concerns and proved to be very trustworthy. The part installation videos were extremely helpful for providing me with the necessary understanding as I installed the parts and equipment on my 2021 Jeep Wrangler.
- RM-156-25
by: Don10/25/2021
I am anticipating the usual excellent service from etrailer. Parts were delivered on time as expected. Final results are still unknown as I am still installing. So far, so good!
- RM-156-25
William D - 11/14/2021
by: Bill M11/13/2020
The kit was easy to install and has performed flawlessly.
Comments
No issues, works as designed.
William D - 11/14/2021
- RM-156-25
by: Bob06/10/2021
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.
- RM-156-25
by: Juan09/15/2021
Installation was super-easy (compared to the rest of the stuff that needs installed to flat-tow a vehicle!). I'm unsure how to test if battery is getting a charge, though!
- RM-156-25
by: Cecil12/19/2021
Just what is needed for charge line from MH 7 way to Jeep 6 way.
- RM-156-25
by: Kenneth06/15/2021
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.
- RM-156-25
Wim - 07/13/2021
by: Wim07/12/2020
Seems to do the job. However, the product does not come with a protective cover, creating a danger of Future shorts if not careful with Tools around it.
Comments
Whenever I connect to the Motorhome the current rush through the charge line trips the Motorhome fuse, and hence it has not been useful to me at all.
Wim - 07/13/2021
- RM-156-25
Bob L - 06/30/2020
by: Bob06/29/2019
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.
Comments
Excellent
Bob L - 06/30/2020
- RM-156-25
by: Dale T.08/02/2019
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.
- RM-156-25
Larry B - 09/20/2020
by: Larry Brauer09/18/2019
I 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.
Comments
Working great with no problems
Larry B - 09/20/2020
- RM-156-25
by: 02/28/2021
Good instructions and easy to instal tnx to Lori AB for putting my order together
- RM-156-25
by: Pasco12/15/2021
Great Products & Great Customer Service
- RM-156-25
Joe H - 11/09/2021
by: Henchman11/08/2020
Easy to install and will work with my v ehicle.
Comments
Product has done what is necessary to keep the battery charged on my tow vehicle.
Joe H - 11/09/2021
- RM-156-25
by: Jeff08/28/2021
I used this to ensure my TOAD is kept charged while traveling. Install was very easy and came with all the parts needed.
- RM-156-25
by: Praba V01/07/2022
Easy to install and works fine.
- RM-156-25
by: Robert09/18/2021
It took a bit of adjusting, but once that was done it works fine
31
294
Show More Reviews
Ask the Experts about this Roadmaster Accessories and Parts
- How to Keep Battery Charged While Flat Towing a 2015 Fiat 500Great question! From what I could find in the owner's manual for a 2015 Fiat 500 (looking both at the Recreational/Flat Towing and Emergency Towing procedures) it does look like you need to keep the steering wheel unlocked while flat towing. Since this means your ignition is on, it can very well drain your battery. I'm not sure why this isn't something that is commonly known because even some of our flat towing manufacturers don't have this info on their site. I reached out to Roadmaster...
view full answer...
- How to Install Battery Charge Line Kit on 2018 Chevy Equinox While Using Blue Ox Patriot IIWhile I can't give you a definitive answer as to how your shop chose to wire in the 12V accessory plug on the dash of your 2018 Chevy Equinox, I can say that it is highly unlikely that it's wired up to the 12V center pin on your 6-Pole connector. Typically, a 12V outlet like # RM-9332 is wired to the vehicle battery through a fuse box, as shown in the included installation video at the bottom of the page. This allows the Blue Ox Patriot II # BRK2019 to be powered by your vehicle's battery,...
view full answer...
- How To Run a Charge Line from Motorhome to Towed VehicleIn order to charge a towed vehicle while in tow you will need a charge line kit for both the vehicle and motorhome. For this, we have the Roadmaster Battery Charge Line Kit for Motorhomes part # RM-156-75 and Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25. Then, you'll need an umbilical to run the charge line between the towed vehicle and motorhome, the Roadmaster 7-Wire to 6-Wire Flexo-Coil Kit part # RM-146-7. The 4-way won't allow this circuit to pass.
view full answer... - Is a Charge Line Kit Required for Flat Towing a 2016 Ford F-150 4x4You are correct, you will need a charge line kit for your 2016 Ford F-150 since it drains the battery when towing. The correct kit is the Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25. This will connect your battery to the 7-way plug at the front of your towed vehicle. You will also need the Roadmaster Battery Charge Line Kit for Motorhomes # RM-156-75 if no charge line is present in your RV. The installation process for both is fairly simple and only requires installing...
view full answer... - Parts Needed to Charge Battery of Towed Vehicle while Flat TowingI have exactly what you are looking for, but the ease of install can be a bit of a loaded question. If you are comfortable dealing with trailer wires such as the occasional splicing or battery terminal connection, then this install will be easier than falling asleep in a La-Z-Boy recliner. If you've never touched a trailer wire before, then I've attached a video that will hopefully put your mind at ease that you can do this yourself. This can definitely be a DIY type of installation. To...
view full answer... - Will Roadmaster Battery Charge Line Kit Overcharge Battery The Roadmaster Battery Charge Line Kit # RM-156-25 provides up to 15 amps of power which is perfect for maintaining the battery on your Jeep but it's not enough that you ever need to worry about it being overcharged. The kit does feature a circuit breaker to help isolate the circuit from issues but it won't by itself prevent back-feeding. This isn't typically a concern with this kind of setup but if you wanted extra peace of mind you would just need to add a single diode like # RM-690...
view full answer... - Installing Battery Charge Wire Kit For Motorhome and Towed Vehicle ConnectionThe Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 should be installed to the center port of the 6-way trailer connection. If you have a different connection, let me know as most charge kits have this 6 wire connector on the towed vehicle and a 7-way on the motorhome. If you don't already have the charge line for your motorhome, then you will want to use the Roadmaster Battery Charge Line Kit for Motor Homes # RM-156-75 which will have you connect the new wire to...
view full answer...
- Does the Circuit Breaker In the Roadmaster Battery Charge Line Kit Need GroundedIn regards to the Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25, the included circuit breaker does not need to be mounted to a metal surface. The installation instructions are as follows, "Find a suitable mounting location for the included circuit breaker; it must be mounted on a flat surface, within approximately 6" of the vehicle’s battery (the closer the better), at a point where it will not interfere with the operation of any components.".
view full answer... - Can Battery Charge Line Kit be Used With 2020 Chevy Equinox PremierThe Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 will not hurt the battery of your 2020 Chevy Equinox Premier; it is compatible with your AGM battery. Also, please keep in mind you will also need the Roadmaster Battery Charge Line Kit for Motorhomes # RM-156-75 if your motorhome does not already have a working 7-way. I have added a link to installs for you to take a look at as well. The rest of the parts needed to flat tow your '20 Equinox are as follows: - Base...
view full answer... - Way to Charge Jeep Wrangler Battery While be Flat TowedThe Blue Ox Patriot part # BRK2019 will draw power from your Jeep battery but there are ways to help keep the battery from draining. The # RM-156-25 is a battery charge line kit that would work well on your Wrangler. I attached an install video for this kit on a similar Wrangler for you to check out as well.
view full answer... - How To Charge Jeep Battery Through Umbilical While In TowIt sounds like you're wanting to install a battery charge line on the Jeep to charge the battery while in tow and then run that through the 6 to 7-way umbilical. If that's the case we have just what you need, the Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25 which is designed for this exact purpose. It will require the circuit breaker inline to prevent any issue with short circuiting the vehicle battery.
view full answer... - Recommended Charge Line for Toad Behind MotorhomeThe battery of your 2015 GMC Yukon must be disconnected to protect your electronics when towing. If your supplemental braking system uses power, then I recommend the Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 on your vehicle. If you don't have the charge line on your 7-way or 6-way of your motorhome, then I recommend # RM-156-75 for that charge line kit. To make disconnecting and reconnecting your Yukon battery easy, I recommend the Roadmaster Automatic Battery...
view full answer... - Installing Battery Charge Line on Motorhome and Towed Vehicle to Maintain Dinghy BatteryThe Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 is a great help for your 2012 Honda CR-V especially because your Patriot brake unit will be drawing power. To utilize this you will need power from your motorhome as well using the Roadmaster Battery Charge Line Kit for Motorhomes # RM-156-75. Since you only have a 4-way on your motorhome and vehicle, you will need a different connection. I recommend using the Adapter 4 Pole to 7 Pole Vehicle End Trailer Connector...
view full answer...
- Which Direction Should Diode of Roadmaster RM-156-25 Battery Charge Kit Get WiredThe correct way to wire up the breaker that comes with the Roadmaster charge line kit part # RM-156-25 is to have the copper post ran to the positive post of the battery that is charging the other vehicle and the silver side to the battery that is getting charged
view full answer... - Recommendation to Keep Towed Vehicles Battery Topped OffWhat a lot of people do to keep the battery topped off is very similar to what you described ha "hillbilly" haha. It works though so in the end that's what really matters. We have a kit part # RM-156-25 which comes with wire, a circuit breaker, and some ring terminals to give you all that'd you need. I attached an install video for this kit on a similar passenger vehicle as yours for you to check out as well.
view full answer... - Does Roadmaster Battery Charge Line Kit Need Terminal Covers at Circuit BreakerThe 12 volts you mentioned is indeed correct for the Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25. As for the cover for the terminals, if I'm understanding correctly you are asking about covers for the ring terminals on the included circuit breaker. There isn't a cover as they are not needed for the installation; the ring terminals are secured by the nut on the breaker and should be positioned in a way that there isn't going to be any interference with other components.
view full answer... - Do I Need A Charge Line From Motorhome To Flat Tow 2019 Chevy Equinox?You do not want to pull any fuses in the 2019 Chevy Equinox when you flat tow and you do want to keep the battery connected. In the past there has been issues with extreme wobble when flat towing an Equinox because of pulling the fuse for the body control module. According to the owner's manual of the 2019 Chevy Equinox you will need to keep the battery connected and use a charge line from the motor home. For that I recommend Roadmaster Battery Charge Line part # RM-156-25. If there is...
view full answer... - Will Flat Towed Vehicle Charge Line Kit Prevent Back-Feed and Overcharging?The Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 has a circuit breaker to help isolate that circuit from issues, but it will not prevent back-feeding. If you want to prevent back-feeding which isn't typically an issue, you can use the Roadmaster Single Park Light Diode # RM-690. Because you are sharing power between two batteries at a low amperage there is very little risk of a surge issue. Another option is to use the Tow Ready Battery Isolation Solenoid # TR118665...
view full answer... - Charge Line Kit That Allows Towed Vehicle Battery to Be Charged from MotorhomeThe Roadmaster charge line kit part # RM-156-25 is the kit that would run a charge line from the 7-way of your RV to your towed vehicle battery. But if your motorhome didn't have this circuit active you'd also need the part # RM-156-75 and you'd be set.
view full answer... - Recommended Battery Charge Line For 2021 Subaru Crosstrek Being Flat TowedWhile Roadmaster does not mention that you need a battery charge line to maintain the battery level of your 2021 Subaru Crosstrek, you can add the Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 to keep the battery charged. This will use the center pin of the 6-way connector you are planning on using, and connect directly to your vehicles battery. If your RV does not have a battery charge line you will also need the Roadmaster Battery Charge Line Kit for Motorhomes...
view full answer... - Is a Battery Charge Line Needed When Flat-Towing a 2020 Jeep Grand CherokeeThe Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25 can be installed on a 2020 Jeep Grand Cherokee. If you will be pulling power from the vehicle's battery while in tow then it would be a good idea to use the charge line to ensure you don't have a dead battery when you arrive at your destination and are ready to unhook the vehicle from the motorhome.
view full answer... - Flat Towing a 2010 Hummer H3 Behind Motorhome Battery Drain Issue SolutionIf there is a fuse that should be pulled in your H3 when flat towing it will be mentioned in the owners manual under the section for flat towing procedures. I can't find anything that states that there is though. What we do offer that will help is a battery charge kit for vehicles that are being flat towed like the Roadmaster charge kit part # RM-156-25. This will put a maintenance charge on the vehicle battery as you flat tow it to keep it topped off.
view full answer... - Troubleshooting Charge Line Kit Not Working When Flat Towing a 2017 Subaru CrosstrekWhat you are describing sounds like the 15A circuit breaker that comes with the Charge Line Kit # RM-156-25 is shot. This can easily be replaced with another circuit breaker like the 20A # 9506P but since your kit is only a year old it would be good to check your wiring as well as these shouldn't go out that quick. Check to make sure that all of the wiring looks good and it isn't exposed. If you do see that some of the wiring is damaged or exposed and you need replacement wire then we...
view full answer... - Does the Roadmaster Battery Charge Line Kit for Towed Vehicles Need GroundedThe Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25 does not require any additional ground. In regards to the trailer connector on the tow vehicle or toad vehicle these will both be grounded as will the batteries that the charge line connects to. In order to bridge the charge line from the motorhome to the toad, the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 is my recommendation since there is an extra pin present to use for the charge line.
view full answer... - Is a Charge Line Kit Needed on a 2014 Honda CR-V if the ACC Fuse is Pulled for Flat TowingUnless you are using a supplemental braking system like the Blue Ox Patriot II # BRK2019 which draws power from a 12V outlet like part # RM-9332 then you would need the Charge Line Kit # RM-156-25 when the ACC fuse is pulled on your 2014 Honda CR-V. If you were to install the charge line kit you wouldn't need to pull the ACC fuse or it would act as a safeguard in case you did forget to pull that fuse. For a complete flat towing setup you will need a base plate kit, tow bar, safety...
view full answer... - Recommended Charge Line For Jeep Battery Using Brake Buddy Supplemental Braking System to Flat TowFor your Brake Buddy, the power should come from your vehicle battery to prevent a loss of power to your braking system. However, if you utilize the 12V power at your 7-way and use the Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25 you will prevent any issue with your vehicle battery. The charge line will send a maintenance charge to your Jeep Battery while you are towing (averaging 2-4 amps at 12V because it is what is generated by your alternator beyond the power...
view full answer... - Recommended Battery Charge Line for 2017 Jeep Grand Cherokee Trailhawk Being Flat TowedYour 2017 Jeep Grand Cherokee Trailhawk does not require a charge line, but I always recommend it because it will maintain your battery without a risk of overcharging it. For the kit, I recommend the Roadmaster Battery Charge Line Kit for Towed Vehicles # RM-156-25. I like using the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 for that function connection to be clean and easy from your tow vehicle. Let me know if you have further questions.
view full answer... - Recommended Wire Gauge and Related Parts to Install 12V Battery Charge Line on 7-WayWe recommend at minimum a 14-gauge wire for providing 12V charging power to a towed vehicle's battery, such as that included in the Roadmaster Battery Charge Line Kit for Towed Vehicles, item # RM-156-25. Naturally, a heavier-gauge wire would do better since it can deliver more current. If you prefer you can use 10-gauge wire # 10-1-1, a 40-amp auto-reset breaker like # PK54540, ring terminals # 44-5310A and wire loom # 7509-10 to make your own kit. You can avoid tripping the breaker...
view full answer...
Do you have a question about this Accessories and Part?
Why etrailer.com?
At etrailer.com we guarantee:Highest quality accessories and parts for the best price.
Our Lowest Price Pledge ensures you will never overpay for the parts you need.Real product know-how.
We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.Most detailed, accurate accessories and part information available.
Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.Installations, made easy.
We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.Fast shipping.
Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.Personalized service for life.
We provide one-on-one, personalized service from the ordering process through the life of your product.Trusted since 1946.
We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.Returns Policy
Need to return an item? No problem. Please read our Returns Policy for more information.
Info for this part was:
Test Fit:
Joe V
Test Fit:
Randy B
Test Fit:
Brent H
Test Fit:
Shane H
Test Fit:
Robert C
Test Fit:
Conner L
Test Fit:
Ryan G
Test Fit:
Clayton O
Expert Research:
Mike L
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Video by:
Andrew K
Video by:
Jonathan Y
Video by:
David F
Video by:
Michael B
Video by:
Jacob H
Edited by:
Lindsey S
Installed by:
Jeff D
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Kathleen M
Video Edited:
Dustin K
Video Edited:
Chris R
Video Edited:
Zach D
Written by:
Shelly K
Updated by:
Wilson B
Updated by:
Hannah L
Updated by:
Isabelle B
Updated by:
Noah M
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Product Experts Available Now!
Call 800-298-1624
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.