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Roadmaster 12 Volt Outlet Kit Installation - 2020 Buick Envision

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How to Install the Roadmaster 12 Volt Outlet Kit on a 2020 Buick Envision


Hi there, Buick owners. Today on your 2020 Buick Envision, we're going to be taking a look at and showing you how to install a 12-volt outlet kit. A 12-volt outlet kit is going to give you a 12-volt source to power any of your accessories. And oftentimes, when you're setting up a vehicle for flat tow, the 12-volt outlets that are on your vehicle may only have power when you're. Got your vehicle running and you're driving it, but when you placed it into flat tow mode, they're no longer powered up, which does limit the braking systems that are available to you. If you're planning on using a portable system that requires a 12-volt outlet, you're going to need one that's powered all the time, even when you're flat towing, to operate that system.We put one on our Envision here today just for that reason, so they can use their Blue Ox Patriot braking system, and that's probably the most common application for this 12-volt outlet.

But you're not limited to installing it in such a way that you've got 12-volts all the time for a braking system, you could use it for many different applications as well. Me personally, on my vehicle, I've installed one because my outlets stay powered up all the time, even when I turn my vehicle off and go inside. And I've got an aftermarket seat heater that I've left on quite a few times and drained my battery down. I installed a 12-volt outlet kit on an ignition source, so that way it's only powered up when I'm driving the vehicle, kicking my seat heater on. But then when I'm done, turn the key off, it disables that circuit because it's on an ignition source and I don't have to worry about draining my battery down anymore.And here's where I found is the most suitable location to hide the outlet, but still be easily accessible to plug in braking system.

We're on the lower left kick panel area here and we've got it up as high as we possibly can to the lower panel underneath the dash here. And we put a slight angle to it so we can easily get it, plug it in and out, but it keeps it out of the way when we're driving. We don't feel our outlet and it's also out of the way of putting in our braking system. And it's got plenty of cable length, it's not too far away from the unit to where we can easily plug it in without worrying about not having enough cable length. And here you can see our 12-volt outlet in operation, it's powering up our braking system here.

The 12-volt outlet does come fuse protected with a 20 amp fuse. It is an older style glass fuse, it's not really a modern style but it's nice that it does come protected. So if you want to follow along with me, we'll show you how to get it installed.Once we get to this point here, we'll find a grommet that we can use to get inside the vehicle. We are going to have to pull up a couple of these push pins, you'll see there's a little opening on one side of these. You can use that opening to get a flat screwdriver or a trim panel tool underneath, and then pop up the center of the pin.

And then you can pull the whole pin out, sometimes the center will come out by itself and sometimes the entire pin will come out. Here's the whole pin. If the center comes out and this stays behind, you can just pull this out and then connect the two back together. We're going to do that with the next one and the one after that, these three should be good enough to get us enough lift that we need on panel to get to the grommet.Once you remove those pins, you can pull up on the panel and you can see you've got a gap here now that you can get your hand in. I went ahead and use the trim panel tool and just stuck it underneath to hold it up. Now that we've got access to our grommet here and we've gone ahead and made a hole in the grommet so we can pass our wires through. We can go ahead and head on to the inside where we're going to take the wires from our 12-volt outlet and pass them from the inside out, it has to go that direction. We're now inside so we can pass our wires through. We're going to be connecting it to our fish wire here to get it through the grommet. These are our two wires here, we'll need to take the two ends that come off of our 12-volt outlet, we're going to pass it through the bracket with the little prongs here facing towards those wires.And we're going to pull this all the way down and it'll sit over our 12-volt outlet like that for mounting it. Then we're going to come back to these two wires, and if you just pull the two wires apart, you can get more length between them. And you can see here, it'll split and then it'll continue to split so you can get more length as you need. We pulled it down to about this far, so we're going to be leaving the ground wire here on the inside. We'll be connecting that on the inside, but our power wire, we need to pass out to the battery. And getting the fuse that comes with our harness, its pre-attached to it, through the firewall can be pretty difficult because of how large it is. You'd have to make a really large hole and oftentimes, when you're doing a flat tow set up, you're running more than just this wire through the firewall, so there's going to be other components there, likely.And all those things are going to add up to being pretty bulky, so to minimize how large we have to pass things through the firewall, we're going to actually cut this harness off. So I'm going to take it about here, we're going to snip off the fuse. We're going to save our fuse because we'll be reconnecting it at a later step, but this way we can greatly minimize the size of the wire we're passing through the firewall. We can then take the end we just cut and we're going to grab our fish wire, and we're just going to use some electrical tape to tape the two pieces together. And I always like to leave excess on the other end of the fish wire, so that way we can leave it in place if we need to use it to run other wires. So now we're just going to run this around, and then we can now go back to the outside and pull our fish wire until our wire comes through.And here we've got our wire pulled through. We can just pull it off to separate it and that should be far enough, we only needed to pull until we can connect to our battery positive. So now we can go ahead and reconnect our fuse harness, since we had cut that off. To do that, we're just going to grab our strippers, we're going to strip back both the end that we pass through and the end that we had cut off previously. We can then use a heat shrink butt connector to attach the two pieces back together, you can get heat shrink butt connectors here at etrailer. And it's just going to slide over one of the stripped ends, we'll crimp this end on. And then over on the other end, we're just going to reconnect it back to our 12-volt outlet. And since this is a heat shrink butt connector, we can then use a heat source to shrink down the ends, which will seal it up. We're going to be using a heat gun for ours.We're going to connect our power source to our battery here. There's a release tab on this side, we're going to lift up on that and there's also one here in the back. We're going to lift up on that one and it will flip open. We're going to attach it to the post located here, but you might notice that your wire has a spade terminal that comes pre-attached to it. We're going to cut that spade terminal off because it doesn't have a way to attach to the battery, just get rid of that and then we can attach a ring terminal. You can also get this here at etrailer, I'd highly recommend adding it to your cart on checkout, unless you have some male spade terminals and ring terminals at home to make your own little harness that will attach to the female spade that's on here.But the easier way to do it is just cut off that female spade, slide on a ring terminal, and then crimp it on. We can then use our 13 millimeter socket to remove the nut off the battery positive post here. We're just going to take our wire, slide our ring terminal on, and then reinstall the nut. We can then make some small notches right here for our wire to pass through, and we can just use the wire cutters we we're using to do that. Just put a snip in it there and we're going to put a small snip right there. And then we can grab the middle piece here and just work it back and forth, maybe give it a little twist. It'll break off and that'll let our wire pass through and allow the cover to close.So now here on the inside, we're going to connect our ground. I've gone ahead and attached it because of how difficult it is to see when putting tools in here and attaching it. But this is the side panel right here where your hood release lever is. If you go straight up, you'll see there's a metal panel right here and we can screw our self-tapper right into that using an eight millimeter socket. So just pass your self-tapper through the ring terminal and run it in. Next, we'll prepare our bracket, and you can see that the 12-volt outlet will slide into the bracket. But when you go to plug things in and out of this, it's eventually going to just pull this out of the bracket, it's not going to be very fun to use. So what we can do is push this in there as far as we can get it and then we'll just use our pliers to squeeze the prongs here, so that way it squeezes tightly onto our 12-volt outlet, that way it'll stay in there.And we're just twisting it and squeezing the prongs because there's three, so it's a little weird getting the angle you need. But if you just go around and squeeze the pairs together, you can get it to be nice and tight on there, this way we're not pulling it out of there. And we can easily plug in our accessories and remove them without worrying about pulling the socket out of the bracket. The bracket now, we can mount wherever we want to mount it, whether you want to mount it down below on the dash. This is an airbag here, so avoid that. We're just going to be mounting ours on the panel to the lower left on the driver's here. Again, it's the same panel where your hood release lever is. In about that location there, you'll receive a couple of self-tappers in your kit, they're going to slide through your bracket and then we can run them down with a 10 millimeter socket.And after you get it started, you can find the right angle that you want it to be at and then snug it down. And then we're just going to run in the other one into the other hole. And we're going to have ours have just a slight downward angle so it's a little easier to access, something about like this, and then we'll just run it in. Now we've got both screws run in, that secures it to our panel. That will complete our installation, we're now ready to plug in our accessories and hit the road. If you removed any paneling, you'll want to make sure you reinstall those in reverse order. Now that we've got our 12-volt outlet installed, we need to make sure it's working properly.Our customer is going to be using this 12-volt outlet for his braking system, his Blue Ox Patriot in his flat tow setup. But you can use it for anything, you can plug in a phone charger in there to make sure it's working. We're going to go ahead and test it out so we know it's working for the customer, for what he's intending on using it for. We've gone ahead and put our Patriot in place and plugged it in. And now we're just going to turn on the unit and we can see there that it is now powered up. So now we know that our 12-volt outlet is working properly, the system is going to go through its normal setup procedure here so we're just going to go ahead and let it do its setup. And if it's able to activate the unit here, we know that it's drawing plenty of power because this unit here is going to draw a little bit of juice as it activates the pedal. Looks like we're all good to go here. And that completes our installation of a 12-volt outlet kit on our 2020 Buick Envision.


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