Gooseneck hitch wire harness question

[mcfarmall]

I am planning on installing a gooseneck hitch on my truck (DIY labor and a purchased hitch). How does the 7 pin trailer plug hook into the truck? Currently I have an OEM 7 pin receptacle down by the "Reese hitch" below the bumper. Is there basically a 7 pin extension cord that plugs into the OEM recep and then can be routed over/under the tailgate to the trailer plug or are the trailer plugs usually long enough to be routed from the ball area back to the truck recep? I don't have a recep mounted in the bed at this time if that's the way it's typically done.

 

[ovrszd]

The trailer wiring plug is long enough to reach your receptacle under the bumper.

If you will be a frequent, long term user, you may want to add a receptacle in the bed. That's how I do mine.

 

[WM75Guy]

You will have to cut a hole and mount a receptacle if you want to go that route. I would recommend it rather than going over the tailgate but that is an option. The wiring part depends on how the truck came equipped from the factory.

Both of mine have a receptacle in the back left corner. The trucks came with the trailer package, which I believe included a place in the wiring harness to plug in so you do not have to splice wires. The 08 receptacle was dealer installed, the 17 was factory installed along with the GN hitch and bed liner. I have never crawled underneath to look at how they connect.

 

[RichM752]

I used this.

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[mcfarmall]

I used this.

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That looks like a good long-term solution! I'll have to look around in the bed for a good place to mount the recep. Thanks for all the replies!

 

[WM75Guy]

Curt is what GM uses for factory GN hitches.