Curt 5th Wheel Wiring Harness Installation - 2018 Chevrolet Silverado 2500

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How to Install a Curt 5th Wheel Wiring Harness on a 2018 Chevrolet Silverado 2500


Hey guys, Connor here at etrailer.com. Today, we're going to be taking a look at the Curt Custom Embed Fifth Wheel/ Gooseneck Wiring Harness for our 2018 Chevrolet Silverado 2,500. Our Curt Wiring Harness here, is going to be an excellent option for our savvy Silverado. It's going to provide the basic trailer lighting functions, as well as the electric brake, reverse, or even auxiliary battery charged circuit for some of our larger trailers.As you can see here, the seven way is located in the bed. So, it's going to be convenient for our Fifth Wheel and Gooseneck Wiring Harnesses, where the siren way might not reach the bumper. As you can see here, we have this nice door, which is going to protect our pins in here from any rust or corrosion and causing any lighting issues.

There's actually a gasket on the inside of the store there. It's going to do a great job, keeping out water and debris.However, I do recommend you apply some dielectric grease to the pins here, just when it's sitting over time to again, help with any rust or corrosion issues. And again, we sell this dielectric grease here at etrailer. We just want to take a little bit here and dab it on the pins. We don't need a whole lot, just cover them.

We can go back with our finger here, just work your way around.Regards to our installation process, this is going to be very simple, definitely something you could do at home by yourself with only very common tools required. There's going to be no wire splicing, because the kit is complete plug and play installation. However, we do need to drill a hole in the bed. We're going to need to get a hole saw. Which again, isn't too uncommon of a tool, you can pick these up at most local stores.Now that we've gone over some of the benefits and features, let's show you how easy it is to install yourself.

To start our installation today, we first want to open the hood on our vehicle and disconnect the negative battery cable. And once we've done that, we can come here to the rear of the vehicle.We can locate our 7-way trailer connector. This is going to be the rear of it. This is actually called a USCAR connector. We want to simply depress this tab right here and pull out.

Just like that. And then, we can take our Curt 7-way Gooseneck/ Fitwell Wiring Harness. We just want to simply replace that with this. So should be able to take. We just want to take this, plug it in until we hear it click. We do want to hear it click and we just want to give it a tug to make sure it locked in place. Now, we can take the other end that we just removed from the trailer connector, we can go ahead and attach it to this. Just match up our ends here, may need to rotate them a little bit, plug it together. And again, if we want to listen for that click, that was a little faint. However, we just give it a tug. We know it's secured in place.Now, we need to find a place to mount the trailer connector, which is going to be on the driver's side in between the tailgate and the rear wheel. So we need to get a good look behind the surface that we're going to be drilling into it. To one, make sure we don't care, see any wires and two make sure we have enough room for our electrical connector. As you can see here, we have an ended portion in the bed here, as well as this raised section. I think we should be able to mount it to either of these two surfaces here, we have plenty of room.Now that we've found a suitable place for our trailer connector, we can come ahead and go up top here and drill our hole. Now we do need to be careful about the stake pocket because it does come down in the bed probably around here. As long as we drill anywhere in between here and here, we should be fine. In order to drill the hole for our trailer connector, we're going to be using a two and a quarter inch hole saw. Now I understand the instructions say to use a two and an eighth inch hole saw. However, we found that it's just too tight of a fit and the locking tabs, don't quite clear that hole so we can easily just go up one drill size. We don't have any issues. We'll just go ahead and get started with our pilot hole.Now that we have our hole drill to the size we need, we can go ahead and take a metal file or a piece of sandpaper, whatever we have on hand and go ahead and smooth these rough edges down. So they don't cut our wires. Anytime we drill into our vehicle, we leave any sort of bare or exposed metal here. We always want to touch it up with some paint, so we don't have any rust issues.We're just using some zip ties here to secure some of the inaudible 00:04:35 harness that we connected earlier. So it doesn't come loose, get tangled around and damage anything. Now we need to Mount our trailer connector, route it up to the hole we just made so we can secure it in the bed. We're just going to use a slot right up here, an opening, to get it up and over this cross member here.And once we do that, we can come around the backside here. This would be hard to see, but just bear with me here. We can pull it and we're going to come down through this hole we have right here, pull the Slack out of it. And once that's there, we're going to go through this hole here. That way we can get on the outside of the frame and inside the fender well. You have a nice little access hole there. Just go ahead and pull it through just like so.Now I have had the inaudible 00:05:27 out here. We're going to go ahead and round it up. We're going to try to fish it through the hole we made in the bed earlier. Now we just want to go ahead and take our USCAR connector and plug it into the back of our 7-way trailer connector.And we do want to line up these little slots here on each side, press it into place. You may or may not hear a click, but then we can just pull back, make sure it's locked. Now that's in place. We can go ahead and run the slack back through the fender well there. And now, we can go ahead and mount our trailer connector, just like, so. We're going to be using the self tapping screws, that came with our kit, and a quarter inch nut driver. I'm going to try to get the trailer connector as straight as possible. The wiring might fight us a little bit. We're just going to run one of our self-tapping screws in, just like that. We'll go ahead and do this for the other three holes.Now we're just going to go ahead and take some of this extra wire loom we have and secure it to the vehicle's existing wiring harness to hold it in place. So we don't have any issues with it coming loose. Now that we have everything installed, we can go ahead and test our wiring. I'm going to start out with our brakes, our left turn signal, right turn signal, and then finally our running lights. That's going to do it today for the Curt Custom Embed Fifth Wheel/Gooseneck Wiring Harness for our 2018 Chevrolet Silverado 2,500..


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