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Roadmaster Battery Charge Line Kit for Motor Homes Installation

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How to Install the Roadmaster Battery Charge Line Kit for Motor Homes


Today we'll be having a look at the Roadmaster Battery Charge Line Kit for motor homes, part number RM-156-75. Okay, with our charge line all hooked up now, this will supply our vehicle that's being towed behind our motor home with 12 volts of power, so the battery in it won't run down while it's being flat-towed. Additionally, if we're hauling just a standard trailer, this will charge the breakaway battery on the trailer, so if the trailer we're to become unhooked, the breakaway battery will have sufficient amount of power to apply the brakes to slow the trailer and stop it safely. This breaker will keep us from having to worry about having to replace fuses on our charge line kit. If, for some reason, there'd become a short and the system would become overloaded, the breaker will flip open and will automatically reset once the problem has been corrected or the breaker has cooled off. It's a quick and simple installation, just one wire to hook up, running from the back of your 7-way connector or your 6-way, depending on the type of connector you're using. Attach it to your breaker then have one lead going to the positive terminal on your battery. Now that we've gone over some of the features, we'll show you how to get it installed.

We're going to use this red wire right here for the charge wire, so we'll strip off some of the insulation, and then we did our charge line, which is the red wire, that went into the terminal marked, AX, for auxiliary, and we'll slide this down. We'll clip it into place til it snaps. Now we'll tighten the wire to clamp up all the way, and we use a 10 millimeter socket and a phillip screwdriver here in order to snug this down the rest of the way. Okay with those snugged down, our 7-way is now securely mounted. All right, so we went ahead and routed our charge line to our vehicle's house battery. It's charged by the alternator so it will be good there.

We secured our wire up to existing wiring harnesses, making sure we kept it out of the way of any moving parts or sources of heat. If you follow a factory wiring harness, more than likely you'll be okay, so there's a wiring harness inside our frame rail. We just followed along that, securing it up with zip ties along the way. The wiring goes through this grommet into the compartment where our battery is stored. Now in our battery compartment here, on our RV, on our case it's behind the driver's side door, we're going to mount our circuit breaker near our battery. Right here, next to the right of our factory circuit breakers will be a great spot.

We'll just use the provided self-tapping screw and secure it in place. You'll see we have one in. We'll do one on the other side too. Now, the wire will need to connect to the auxiliary port on our breaker. That's the silver one.

It's also the top one in our case. I'll measure off how much we're going to need and cut off the excess. We'll strip off some of the insulation here and we'll crimp on one of our small ring terminals. Then we'll remove the nut and place it on. Reinstall the nut. Now in one of the ends of the wire, we just cut off we'll strip off some more insulation and attach the other small ring terminal to it, crimp it down and we'll attach it to the gold terminal on the bottom that's marked, BAT, for battery. We'll measure off how much we're going to need to attach the positive post on our battery, cut off the excess, strip back some insulation, make sure our large ring terminal will fit over there, which it will, stick over the wire and we'll crimp that one down. Before we connect that we're going to tighten down those 2 nuts with a 10 millimeter socket. All right, now we'll take off the wing nut on our positive battery terminal here, place on a ring terminal over the stud and reinstall the wing nut. We'll snug it on down with a pair of pliers. Okay, with that secure, our install is now complete. We'll show you how to test it. We're going to use a trailer simulator here, If you'd like to purchase one of these, you can find one on our website or you can just hook it up to your trailer. Open our door up here, we'll insert our 7-way plug, close the door on over. First thing we're going to check is make sure we have our charge line working on this. We'll flip our gage down here to battery charge and as you can see, we're getting about 12 volts. That means that's working. That completes our look at the RoadMaster Battery Charge Line Kit for motor homes, part number RM-156-75. .


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