GMC Sierra 3500 Trailer Wiring

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Trailer Wiring

Available Years for GMC Sierra 3500 Trailer Wiring


Trailer Wiring Harness

Make installing your trailer wiring harness as easy as possible with a custom fit wiring harness. Trailer wiring from Draw-Tite, Curt, Pollak, Tow Ready, Bosal, and Hopkins eliminates or reduces the need to cut and splice wires. It also helps to protect your vehicle's sensitive electronics from mis-wired trailers.

Choose the year of your vehicle to the left to find a custom fit trailer wiring harness.




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GMC Sierra 3500 Custom Fit Vehicle Wiring Videos

Trailer Wiring Harness Installation - 2016 GMC Sierra 3500

Speaker 1: Today on this 2016 GMC Sierra 3500, we'll be having a look at and showing you how to install the Bargman 5th wheel gooseneck 90 degree wiring harness with a seven pole plug, part number 50-97-410. Here's what it looks like installed. This is an ideal solution for those of you who are towing gooseneck or 5th wheel trailers to hook up your electrical connection from the trailer in the bed of your truck. It's easily accessible as you're hooking up. You don't have to worry about draping your electrical connector over your tailgate to try to reach your factory connector down by the bumper. In most applications, the trailer wiring harness isn't long enough to do that properly anyway.We have a nice spring-loaded dust cover here.



Fifth Wheel Wiring Harness Installation - 2017 GMC Sierra 3500

Today in our 2017 GMC Sierra 3500, we'll be having a look at and installing the Bargman 5th wheel fuse neck 90 degree wiring harness with seven pull plug, part number 54701-003. Here's what the wiring looks like installed. This gives us quick and easy access to a seven way connector for our goose neck for our 5th wheel trailers. This will provide us with the inudible 00:29 we need in order to tow those properly. Also, most fuse neck or 5th wheel trailers, the connector typically isn't long enough on the trailer itself to reach down over your tailgate to plug into your factory seven way in the back of your truck. This tees in into your factory seven way. There's no cutting or splicing any wires required and this gives you an additional connector in the bed of your truck so you can quickly and easily hook up to your fuse connector with your 5th wheel without having to worry about having cable ripping over your tailgate.



Hopkins Endurance Fifth Wheel Wiring Harness Installation - 2016 GMC Sierra 3500

Today on our 2016 GMC Sierra 3500, we are going to be showing you how to install the Hopkins Endurance Fifth Wheel/Gooseneck 90 Degree Wiring Harness. This offers the seventh pole plug. It's part number is 41157. This is a nice, easy addition to add to your truck, truly help making the connections with the fifth wheel trailers much easier. We're going to be able to locate a seven pole plug tied directly into the vehicle's wiring without having to do a lot of modifications. It's a pretty quick, straightforward job. Let's start by taking a look at the socket for the plug.



Fifth Wheel and Gooseneck Wiring Harness Installation - 2016 GMC Sierra 3500

Today in our 2016 GMC Sierra 3500, we'll be installing the tow-ready fifth wheel and gooseneck wiring harness for 7-pole, part #20110. Here's what our kit comes with. We have our 7-way adapter here. CC has this nice dust cover with a gasket on it that snaps shut. It'll keep any dirt, debris, or moisture from entering it and causing corrosion. We have our wiring harness with our T-connector here. This will tap in the factory 7-way underneath the vehicle.



Hopkins Endurance Fifth Wheel Wiring Harness Installation - 2015 GMC Sierra 3500

Today on this 2015 GMC Sierra 3500 Crew Cab we're going to install part number 41157. This is the Hopkins Endurance 5th Wheel and Gooseneck 90-Degree Wiring Harness with a 7-Pole Plug. First off you'll find the location for your 7-pole connector. This is largely personal but typically we install it in this corner right here. I think there's a nice opening below the stake pocket here that we can install it. We'll drill out a quarter inch pilot hole first and then follow up with two and an eighth inch hole saw.