Bargman® 54700-003 - 90 Degrees 5th Wheel 7' Adapter Harness

2007 GMC Sierra
Bargman® - 90 Degrees 5th Wheel 7' Adapter HarnessBargman® - 90 Degrees 5th Wheel 7' Adapter HarnessBargman® - 90 Degrees 5th Wheel 7' Adapter Harness Installation InstructionsBargman® - 90 Degrees 5th Wheel 7' Adapter Harness Installation Video 602x420Bargman Authorized Dealer
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GMC Sierra 2007, 90 Degrees 5th Wheel 7' Adapter Harness (54700-003) by Bargman®. Drilling Required. Wire up your tow vehicle and trailer with whatever it takes to get your trailer lights on, the electric brakes slowing down, and the trailer battery charging. From simple wiring connectors, to connectors and harness that lets you plug directly into your tow vehicle harness, to adapters that let your 3-wire car turn signals successfully operate your 2-wire trailer lights, we have the electrical solutions for your towing needs. One-Year warranty

Fits Following Models: GMC Sierra 1500 / 1500 HD / 2500 HD / 3500 / 3500 HD with Factory 7-Way Connector

Fitment Notes: 3 wire system with OEM standard 2 wire harness.



  • Plug and Play T-harnesses to connect to vehicle wiring
  • Trailer wiring connectors, for both truck and trailer
  • 4- 5- 6- and 7-pin trailer connectors
  • Quick and easy to install

Wiring for your trailer can be as simple as plugging in a premade harness to your truck’s rear lights, totally brainless. If you aren’t fortunate enough to have a truck that we have a t-harness for, well, you may have to splice some wires, no big deal. It seems there are a bewildering number of different trailer connection plugs, from simple flat 4- wire plugs to 7-blade plugs as big as an apple. We have adapters to let you plug almost any trailer into any truck that’s wired for a trailer.

Brand: Bargman       Part Number: 54700-003       UPC: 783192012418 This part is compatible with 143 vehicle(s)
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Bargman lighting and vehicle electrical connection products provide complete solutions for the recreational vehicle industry. Founded in 1931 to provide electrical connection products for the U.S. military, the Bargman brand has since been in lock step with the light duty trailer and recreational vehicle markets providing innovative designs and quality products for decades. Bargman is a recognized brand and an invaluable partner to the commercial truck and light-duty trailer manufacturers and their respective aftermarkets throughout North America.

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