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Pollak Fifth Wheel and Gooseneck Wiring Harness Installation - 2021 Ram 2500

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How to Install the Pollak Fifth Wheel and Gooseneck Wiring Harness on a 2021 Ram 2500

Hey everybody, my name's Ryan and here eTrailer, we install, test, fit, and review a lot of different parts. That way we could try to answer any questions those of you might have. And that's exactly what we're doing here today on our 2021 Ram 2500. We're going to be taking a look at, and showing you how to install the Pollak in-bed Gooseneck and fifth wheel trailer wiring.Whenever you're pulling a fifth wheel or Gooseneck trailer, it's going to be really convenient to have a plug back here, right inside of the bed. That way, you can just take your wiring, plug it right in. Everything's nice and clean and easy to get to.

Without this, you're going to have to drape that wiring over your tailgate, plug it in down there by the bumper. And it's just a hassle, honestly.When I've pulled trailers like that, you're worried about that wiring coming unplugged or getting hung up on something, and at the end of the day, that just don't give you that peace of mind that you're looking for.I will say, this is a pretty nice kit here. That's a nice handle down here. He can easily get to it and lift it up. The cap's spring loaded and it's actually pretty good amount of tension.

You have to put a little effort into opening it, so that's good for a couple things. One being whenever you're not using it, it's going to seal up nice and tight, keep all them terminals inside protected.And when you are using it so your plugs in there, there's going to be this little catch here. And from the tension of a lid, that's going to spring down onto your plug and it's going to help prevent it from getting accidentally pulled out. I benefit both ways there.What's nice about this setup is the fact that it's a T-connector. What that means is more or less a T is right into the back of your factory harness.

And that's going to allow you to still be able to use your factory bumper plug here. Whenever you're not telling your Gooseneck or your 5th wheel you have regular bumper pull trailer, you're still able to plug it in back here nice and convenient just like you used to.At the end of the day, one of them simple things that often get overlooked but pretty important, it actually makes your life just a little bit easier whenever you're doing some towing. Now as far as the installation goes, it's pretty straightforward. You don't have to do anything crazy. It shouldn't take you a whole lot of time.

However, I will say, we'll need to pick up some self tapping screws that we can actually attach a plug to your bed.But other than that, you really don't need to do anything special. It shouldn't really fight you too much, whether you're doing it at home, in your garage, or maybe even in the driveway. Speaking of which let's go ahead and hook it up together now.To begin our installation, we're going to be up in the bed of our truck and we're first going to find a spot to Mount up our connector plug here. The spot that I chose is right here on the driver's side, just in front of our cargo hook here. And that's really our best option. There's a big brace that runs through here a little bit further.We prefer not to have to drill through there. And behind here is relatively open. Regardless of where you choose to mount, one thing you definitely want to do is look up behind there, make sure you're not going to hit anything of importance or anything like that. With that being said, I'm going to use a whole saw to create my opening. And this is two and one eighth of an inch in diameter. I put a mark there, I get it lined up and make a hole.It looks like we actually came into that brace a little bit, no big deal. We'll just continue to run our whole saw through there and get that little portion cut out as well. I got that hole cutout and it looks like a little piece of that brace will actually be in the way. Not a big deal at all.What we'll do is just continue to run our whole saw through and get that little section cut out as well. They cut out. I'm going to do is grab a vacuum and just clean up all of these metal sheets. What I do suggest doing, since we do have some bare exposed metal here, just to help keep it protected a little bit, I'm going to take a paint stick and apply a little coating over there where it says a little bit of protection.If you don't have one of these paint sticks, you can always just grab a can of clear spray paint and do this that way as well. Grab our harness and the end of it that has the pens here that are set up like so, we're going to have to attach these to the connector.If you look at it from the back, we'll go over what color wire goes where and what they do. Starting, we'll just start with this large opening right here. That's going to be the white wire and that's going to be for our ground. We'll work to this one here. Our blue wire will go to it. That'll be for electric brakes. This one will be green for our right turn. This one will be black for our 12 volt power.This one right here will be brown for taillights. This one right there will be red for our left turn. And the one in the center will be yellow for our reverse lights. The way these work, we'll just start with the white wire. What you're going to do is take it, push it into the back and you can flip it around.And what you'll do is you'll push it and you'll feel it click in. And once it clicks in, you can pull back on it and make sure it's fully seated, which it is. There'll be a little movement and that's normal though. As long as you don't pour it out. And you want to be sure to do this because if you put the pen in on the wrong side, it will pour right out and it won't be connected.It's important that you do that or you'll have issues in the long run. I'm just going to repeat that same process for each one of our wires. I got all the wires put into place and that's how they turned out. Once you have them all on there, you can flip the connector around and it's going to come with this keeper and you got to take this keeper, line it up and that's just going to snap right into place.Then moving back up to our truck bed, we can take the other end of our harness, the one that has this T-connector here. And we're going to feed these through the hole and down to the bottom of our truck. Now, when you're doing this, it can be a little tight. You might have to finagle it in there, get it to drop down, push this all the way down.Once you have about a foot of wire left to work with before we plug it into our connector, I do suggest using some dielectric grease on the terminals. This is going to help protect it against corrosion. We can get some of this right here at etrailer. Going to get coating. Take our connector plug, marry the two together, push down on this keeper.It's almost like a lock, so you can't pull it apart. When it's connected, push it flat against our truck bed, try to make sure it's nice and level when it looks good. I think that's about right. Now what I'm going to do is just use some self-tapping screws. You will have to grab these separately and I'm just going to secure it to the truck bed.Now, underneath our truck, here's how our wiring came down and I just loosely routed it. Once we have everything connected, we can always zip tie it up and clean it up a little bit. And what we're going to need to do now is plug in our T-connectors. Again, these I'm also going to put some dielectric grease on them, do that on both ends, just slough this thing for the time being. You need to locate our factory connector, which is this right here.This goes into the seven wing on our bumper. We're going to disconnect it, clench on these tabs here. Sometimes it can be a little tight, especially if it's never been removed before. We pop that free. This end will plug into one end of our T-connector, we pop them together. The other end to go back into our factory seven way, plug it right in, push down on me keeper.I went ahead and secured everything using some zip ties. And this is how it turned out. I acquired a bit extra wiring here. I just bundled up, routed along through here. Just kept everything nice and tight against our back bumper. Now, whenever you're routing, something I do want to mention, you want to do your best to avoid any hot, sharp, or moving parts.That is a good idea to test your wiring, to make sure that it is functioning properly. Go ahead and try your left turn. Our right turn. Our running lights. Our brake lights. Our brake controller output. And you can see in the top right corner, we have our 12 volt auxiliary power.And if I start up the truck and put it in reverse, we can go ahead and check those as well. That is a good idea to use a tester box this because if you just plug into your trailer and try everything, if you have an issue, the trailer could be the culprit, not the wiring.By using a tester box like that, it eliminates that possibility. And that will finish up our install and our look at of the Pollak in-bed, 5th wheel and Gooseneck trailer wiring on our 2021 Ram 2,500..

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