Looking For 5th Wheel/Gooseneck Wiring Harness For 2018 GMC Sierra 2500 With 6-1/2' Bed

Question

Question:

I would like some help to find the correct trailer harness for the bad of my truck 6 1/2 ft 2018 gmc Sierra

asked by: Daniel J

0

Expert Reply:

Hey Daniel, thanks for reaching out. Yes, we do have a wiring harness that will allow you to add a 7-way to the bed of your 2018 GMC Sierra 2500. For the 6-1/2' bed I recommend the following:

- Mighty Cord 5th Wheel/Gooseneck Wiring Harness w/ 7-Pole Connector - 7' Long # A10-7007

This will tee into the factory 7-way and add an RV 7-way to the bed. Perfect for hooking up a 5th wheel or gooseneck trailer.

What kind of trailer will you be hauling?

expert reply by: Jesse M

0

Mighty Cord 5th Wheel/Gooseneck Wiring Harness w/ 7-Pole Connector - 7' Long
(click to enlarge)

Bobby B.

5/20/2026

It was ordered for our fifth wheel and it works great was very pleased ..

Jesse M.

5/21/2026

@BobbyB Nice! Glad to hear the 5th wheel harness is working out. Thanks for sharing!

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Looking For 5th Wheel/Gooseneck Wiring Harness For 2018 GMC Sierra 2500 With 6-1/2' Bed

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