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B and W Custom Base Rails Kit Installation - 2014 Ram 2500

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How to Install the B and W Custom Base Rails Kit on a 2014 Ram 2500


Today on our 2014 RAM 2500, we're going to be taking a look at and showing you how to install the B&W custom installation kit with base rails for fifth wheel trailer hitches. So here's what our fifth wheel rails are going to look like once we have them installed. Now these are going to allow us to put a fifth wheel trailer hitch in the bed of our truck and tow a fifth wheel trailer safely down the road.You see here that we have multiple attachment points on our rails. That's because our fifth wheel rails are going to work with most industry standard fifth wheels like B&W, Curt, and Draw-Tite. Whenever we're not towing, we can take the fifth wheel hitch out and our rails are going to take up a very minimal amount of space. So we'll have full bed access.

In fact, our rails are going to take about an inch and a half from the lowest point in our bed.Now the rails inside of the bed are going to attach to these frame plates. Now these are going to be custom designed, so we're not going to have to worry about drilling or cutting into the frame at all. Now the rails and the plates are going to have this nice, gray powder coat finish on them, which is going to help resist rust and corrosion and it'll look good in any color truck bed. So now that you've seen what our rails look like and gone over some of the features, let's show you how to get them installed.To begin our installation, we want to take one of our rails and we're going to put it pretty close to the cab. I do want to mention that the hole here on the center along with these couple other ones we're from a previous install where the owner had a gooseneck in the bed.

That's not part of this installation. We're going to put the rail down. We want to take a tape measure. We're going to hook the end of our tape measure to the very end of our bed, not on the tailgate. Then you want to double check your instructions, depending on if you have a long or a short bed.

And we're going to put our rail in the position it tells us.You want to make sure that it's even going across and that it's centered in between the bed. So we'll measure on each side of the wheel well to make sure it's even. Now once you have the rail in place and you make sure your measurements are right. We're going to come to the very end of our rail and we'll find two square holes. We want to move into the second one from the end.

Go ahead and take a paint marker. You want to mark right in the center of that hole and the one right behind it. Now both sides of our rails, we're going to mark those locations. Then if we move to the center, we want to mark the center square hole that's closest to the cab of our truck. Mark all our locations, then we're going to move our rail out of the way. And we're going to drill those five spots out.I'm going to start out using a rather small drill bit just for a pilot hole. We'll drill out all five locations. Now when you're drilling through the bed, you want to be careful that you double check underneath that there's nothing down there that's going to get damaged. Now we're going to want to move underneath our truck and we're going to find two pilot holes that we drilled through the bed. It'll be just forward of the rear axle, right by our shock here. You're going to want to grab the bracket, one on the passenger's side. So I grab the passenger's side bracket. We're going to lift it up and the two oval holes here are going to line up with two threaded holes in the frame. So we want to hold it up, make sure everything's lining up and we can double check that our pilot holes land inside those holes.Now that we know that everything does line up, the weld nuts and the holes in the frame. We'll check the other side then we can move up top. You're going to want to drill these holes out to a 9/16. Now most of us aren't going to have a 9/16 drill bit, so using a step bit will work just fine. So let's enlarge those. Once you have that one enlarged, we'll go back and enlarge the remaining holes.Now it's not a good idea to leave exposed metal on your vehicle. So I'm going to come back with some spray paint. It's going to cover up any exposed area, hopefully preventing any kind of rust or corrosion from building up. We'll go ahead and take our rail and slide it over the holes that we drilled, line everything back up. And you'll notice that there's going to be a gap because of the bed corrugation. So what we want to do is we want to make sure we grab one of these U shaped spacer blocks. That's going to take up that gap. You may need to lift the rail up. We're going to put them in any location that's going to be a low spot. Make sure you still have room to get the bolt in place. We'll take our carriage bolts. Make sure it drops all the way through. Now you want to repeat that for all the mounting locations on this rail.Now if we come back, we can see that our carriage bolts are coming down through the bottom of the bed. But we need to clean up the two holes so we can make sure that our bolts are going to thread in easily. I'm just going to take a little bit of spray lubricant. We'll spray up inside. Then we'll come back with a nylon tube brush, make sure there's no dirt, debris, or any rust inside of there that'll cause cross threading problems. You want to make sure you clean out both of the weld nuts on both sides of the frame. Now once you have those clean, we'll take our frame bracket. We'll make sure that the bolt holes go through the tabs on each one. We're going to grab one of the metric bolts out of our kit. We're going to make sure we put a lock washer and flat washer on it. And you'll notice that on the frame bracket, there's going to be a spot that's going to sit really tight right against the frame and then a spot where it's going to have a gap.We'll want to take the bolt and washer and lock washer, and we're just very loosely going to get it started on the bolt hole that's closest to the tailgate where it sits nice and flat. I'm going to leave it pretty loose for now. We're going to use the same bolt, lock washer, and flat washer for the rear space. But since there's that gap, we're going to take two of our round hole spacers and we're going to go behind the bracket here. So that's why we want to make sure everything's nice and loose. So we have enough room to slide our spacer in place. Make sure we go through both spacers. And then we'll thread it into the frame. So we want to get this hand tight for now. Make sure our brackets and spacers aren't going to fall down.And once you have everything in place, if you are having trouble getting that bolt going through. There is two different size bolts in our kit. The one towards the back is going to be the short metric bolt. And the one towards the front with our spacers, you want to make sure you're using the long metric bolt. It's just a little bit longer. It's going to make it easier to thread everything into the frame.Now we'll grab our offset square hole spacer. We're going to slide it over the bolt coming down through the frame. Then we want to grab a flange nut and secure it down. Now at this point, again we just want everything to be hand tight. So we're going to leave everything nice and loose in case we need to make any adjustments later on. Then we're going to do that for all of the bolts that are coming down through the rail.So with our front rail in place and everything hand tight, you want to grab the base of your fifth wheel and put it into your forward rail. So we can get the positioning correct for our rear rail. And once you have it in place, we'll take our rear rail and we'll line up the rear rail til we get our fifth wheel to slide in. Now once we get it in place, you just want to make sure that the rail is centered. So you want to double check your measurement side to side and make sure that it's not twisted or anything.Our rear mounting rail is going to have five mounting locations just like the forward one. They're just going to be in different spots. We're going to want to go to the very far of this in hole on each end of the rail. We'll make a mark. And then in the very center, we're going to be doing the one that's closest to the tailgate. So we'll mark all of our holes. And then just like before, we're going to drill a pilot hole and then come back and enlarge it to the full 9/16.Now that we have our pilot holes drilled in the five locations, we're going to start focusing on the three rearward mounting holes. We're going to enlarge those to a 9/16. For the forward mounting locations on each end of our rail, it's actually going to land right in a bed support for the hat channel. Now we want to make sure that our bolt can go all the way through. So I'm going to be using a really long half inch drill bit. That way I can make sure it's nice and straight. I'm going to go through the bed and then through the hat channel.Now that we have both forward holes drilled all the way through, we're going to need to enlarge the hole that's in the bed to a 7/8, because we're going to have a spacer to make sure that our bed doesn't crush. So again I'm going to use a step bit. I'm going to enlarge this hole til it's 7/8 inches wide. But you want to do it from the top of the bed. You don't want to do it on the bottom. We'll repeat that for the other hole as well.For our large hole, we'll grab that spacer. We want to drop it down to where it's going to sit even with the bed just like that. So we can put our rail back in place. And where we have those tube spacers, you're going to want to grab the long carriage bolt. That way it can go through the rail, through the spacer and come out the bottom of the hat channel. Now all the other bolts are going to be your regular sized carriage bolts. But if there is a high or a low spot, make sure you put that U shaped spacer block just like we did with the forward rail. And I'm going to go ahead and put my base back in place. Make sure nothing shifted on me and I can still easily get it in and take it out.Now if we come underneath, over here on the driver's side we'll see our two bolts coming down through the bottom of the bed. We're going to have this wiring harness here. Once we have the wire out of the way, we're going to take our frame bracket. Make sure we have the correct one. And again, the tabs are going to line up with the bolts coming down through. And the other holes are going to line up with our frame holes. We're going to use the same combination of hardware to get everything in place.Then we'll take our square hole spacer block and we'll secure each one of the carriage bolts coming down through the frame with a nut and that block. Now you want to make sure you get these again hand tight. We'll repeat that for all the remaining bolts that are coming down. I'm going to come back with a 19 millimeter or a 3/4 inch socket and I'm going to tighten up all the flange nuts that are securing the rails to our frame brackets first. Once the rails are tightened to the frame brackets, we'll tighten our frame brackets to the frame. Again, I'll be using a 19 millimeter socket. You want to make sure you tighten up all those bolts.I'm going to come back with a torque wrench. I'm going to torque all my hardware down to the specified amount in the instructions. You just want to make sure you follow the sequence and the value to torque all your bolts down. And we're going to repeat that for all of our hardware. So with our rails torqued down, we can go ahead and resecure any wires that we removed earlier and tidy up anything that needs to be. That'll finish up your look at the B&W custom installation kit with base rails for fifth wheel trailer hitches on our 2014 RAM 2500.


Info for this part was:

Employee Andrew K
Video by:
Andrew K
Employee Jonathan Y
Video by:
Jonathan Y
Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Brent H
Test Fit:
Brent H
Employee Robert C
Test Fit:
Robert C
Employee Ryan G
Test Fit:
Ryan G
Employee Bradley B
Test Fit:
Bradley B

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