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Roadmaster Automatic Battery Disconnect Installation - 2018 Chevrolet Colorado

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How to Install the Roadmaster Automatic Battery Disconnect on a 2018 Chevrolet Colorado


Speaker 1: Today on this 2018 Chevrolet Colorado, we'll be having a look at and showing you how to install the Roadmaster Automatic Battery Disconnect with Switch for towed vehicles, part number RM-766.Here's what your battery disconnect looks like installed. Now, the reason you're going to want this on the Colorado when you're flat towing this behind your motor home, Chevrolet does require the battery to be disconnected. This will save you time and energy from having to open the hood and manually remove your battery terminal. This will do it automatically via a solenoid built into this disconnect via a simple press of a switch inside the vehicle. We'll show you that now.With our battery connected, our engine starts normally. When we disconnect it, we have no power at all anymore and our vehicle is now safely in tow mode without us doing anything under the hood.

Now, when comparing this to other quick disconnect options that we have available on our website such as the Deka, that one requires you to go underneath the hood and turn a wheel to disconnect your battery terminal. This one, you don't have to do that. It's just all inside the vehicle, and it's just a simple press and you're good to go.Now, for this particular flat tow set up, we used a Roadmaster Easy Four base plate, a Roadmaster Automatic Battery Disconnect, the Roadmaster 7 to 6 Wired Diode Flexo-coil Wiring Kit for our lighting system. For our breaking system we used and SMI Stay and Play Duo. And, for our tow bar, we used a Roadmaster Falcon 2 tow bar.

Depending on the hitch height of your motor home, you may or may not need a high low adapter. We have many different options available for you on our website.And, now that we've gone over some features, we'll show you how to get it installed. To begin our install, we need to locate a place to mount our disconnect. We're going to mount our disconnect right in this area here. We already went ahead and used a paint marker to mark where our screws are going to go through.

Now, we'll drill two small pilot holes in the center of those marks.Now, we'll take our solenoid, we'll stick it over those holes and we'll secure it with the provided self tapping screws. All right, that's a nice solid mount and it's out of the way of any of our components that we may need to access.Now, we need to gain access to our positive battery terminal and our fuses and cables that are underneath here. So, we'll lift up on this tab here, pull up, pull up here, there's another tab here, so we pull, we're going to lift, and the whole thing will open. Now, we're going to remove our positive battery cable. To do that, we'll loosen the 10mm nut that's over the battery post itself.

Pull the cable off the terminal. And, remove the 13mm nut over here on our fuse block. And, we'll lift the cable off.Now, we took our cable from our solenoid or disconnect that's labeled "Battery Cable," we routed it behind all the factory cables here, and we're going to place this onto the stud on our fuse block, and down inside like that, and reinstall the factory nut.Now, we'll take our heat shrink tubing here, and we'll slide it over our remaining cable from the disconnect that says, "Battery Post." Now, we're going to attach this cable to our factory battery cable. To do that, we'll take this bolt, nut, and washers. We'll have the bolt go through the cable, we'll place on a washer, and that will go in between our factory cable and the new cable. Place on another washer, and then, we'll thread on the nut. Now, we'll go ahead and tighten down the bolt and nut.Now, we'll slide our heat shrink tubing over where our cables bolt together and we'll use a heat gun, which we have available on our website to shrink this down.Now, we use the provided wire loom, just to help better conceal and protect our battery cables that we're adding. We're going to leave this one disconnect until the very last step, so we don't have any power in any of our system. This will go to our positive terminal in the battery. So, we'll set that aside for right now. Get our cover out of the way here.The white wire, this needs to go to ground on our system so our switch will work properly. We're going to ground our wire underneath this 10 mm nut on the negative terminal of the battery. So, what we're going to do, is we'll strip off some insulation from this wire, place on a ring terminal, and we'll crimp that ring terminal on. Remove this 10mm nut. Place the ring terminal over that stud. Reinstall the nut.All right, now we're inside of our vehicle on the driver's side looking at our lower dash panel underneath the steering wheel. We need to remove this panel. Now, in order to remove this panel, we'll have two 7mm screws on the bottom just like this one that we can remove. Now, we'll grab this panel and pull it away from our dash. Now, we'll unplug our headlight and our four wheel drive elector switch. We'll slide back on these red lock tabs, press on the tab behind it, and pull to separate. We'll set this panel aside.And, this is where we're going to install our switch, in this general area here. But, behind this panel, right in the area, is another metal panel. And, we can't have our switch making contact with a metal surface, because it will act as a conductor and thus make the switch ineffective. So, we're going to unbolt this panel here by removing the four 10mm bolts and modify the panel.Here we have our panel in a vice now. This section right here, we're just going to cut it off. And, we'll cut it off using a cutoff tool. We'll take the metal panel now, and reinstall it into it's original position.And, now we need to drill the hole to mount our switch on to our panel. We're doing ours right in this area here since we trimmed that area out on the metal panel, we're fine. Just want to make it somewhat centered. We'll drill a small hole to start. Now, we'll enlarge our hole to the appropriate size as indicated in the instructions. Now, we'll take our switch and we'll push it through the hole.Okay, with the switch pushed through, we'll now take our nut that will secure it in the back, thread it on, and we'll snug it down. We don't need to go super tight, just a little bit past hand tight will be okay.Now, underneath the dash behind our parking break where our hood release cable goes through the fire wall, there's a grommet. We're going to take a screw driver and we're going to poke a hole in this grommet. With the hole poked in our grommet, we'll now take a pull wire of some sort and poke that through the hole. Underneath the hood, here's our pull wire that we shoved through the firewall. We attached it to our gray wire, and we're going to bring this inside the vehicle.And, we've cut of the excess of our gray wire, and we secured it up to this wiring harness on the dash with a zip tie. Now, as you can see, that was a red and a black wire inside this duplex wiring. It's called duplex because there's two. So, now we're taking a knife and we're going to split the insulation around both wires a little bit, that way we have access to both individual wires. And, we're going to strip the insulation on the red and black wire. So, we'll slide our wires into the holes in our switch. Now, it doesn't matter which wire goes to which section on the switch. So, you just stick it on one side, tighten the set screw back over the wire. And, do the same for the other wire.Okay, with our switch connected, we can now reinstall our panel, making sure we plug all the electrical connectors back in. Now, we can take our positive battery cable, reinstall it over our positive battery post, and we'll tighten down the nut.Okay, now we'll go to our fuse holder on our disconnect, open the cover, and we'll install a provided 7.5 amp fuse. Okay, with the fuse installed, we can now close the dust cover over the fuse. We went ahead and trimmed just a little bit of our positive post cover here off so we can still close it and protect the terminal. We also zip tied our cable here out of the way, so we still have clean access to our fuse box and our main fuses and we can still get to our battery, and it won't rub against our air conditioning line.Now, we'll test it out to make sure it's working. When we first install it, it should be powered off. We'll press the button once. We hear a loud click. And, we'll try to start the vehicle. Okay, engine starts. We'll shut it off. Press the button again. And, we'll try to start it now. And, nothing happens. So, we know it's working properly.And, that completes our look at and installation of the Roadmaster Automatic Battery Disconnect With Switch for towed vehicles, part number RM-766 on this 2018 Chevrolet Colorado.


Info for this part was:

Employee Jeff D
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