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Old 09-30-2015, 11:45 AM   #1 (permalink)
Bigwooo's Avatar
Join Date: Nov 2007
Location: Southern Baja California, Mexico
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Need online source for OEM replacement trailer wiring harness

I live in Mexico and don't have access to a dealer to get OEM parts. I need to replace the truck side 7 blade RV trailer wiring connector, as well as the connector on the trailer side. I can't find an online source for the OEM truck side wiring harness, only aftermarket connectors that screw to the bottom of the bumper. I'd like to find an exact wire harness replacement for my 2008 duramax.

There's also a set of wires with connectors that run between the permanent truck wiring and the truck side connector. I also need to replace that wire harness. I can only find extensions for 5th wheel connections, not a replacement. I guess I could loop up the wiring to take up the slack on the 5th wheel extension, but it would be a lot cleaner to replace it with a set of wires that are the same length.

Any suggestions for online vendors where I can find the exact replacement parts? I'll ship it to a friend to bring down to me.


2008 Duramax crew cab, 4WD, long bed. Line-X'd the bed/wheel wells, 265/75/16 BFG AT's, Torklift frame mount camper tie downs, lubrication specialist secondary fuel filter, Buckstop bumper, Piaa off road lights, Duraflaps rear/ DeeZee running board front, air ride air bags, Rancho 9000XL shocks (Blown in less than 15,000 miles), changed to Bilstein 5100's.

1997 Ford crew cab 4WD, long bed, service body, custom front/rear bumpers, HD front/rear springs, 2 inch lift 285/75/16 BF all terrains, Rancho 9000's, Racor 500, Lance 8' Camper. Used to search for surf on remote beaches of Baja California. Never left me stranded. Sold in '08. Was sad to say goodbye to such a good reliable truck.

1994 Ford F250 Diesel Sold

1972 Ford F250 Gasser-RIP

Last edited by Bigwooo; 09-30-2015 at 12:09 PM.
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Old 09-30-2015, 01:46 PM   #2 (permalink)
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Old 11-03-2015, 03:51 PM   #3 (permalink)
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truck side connector, I bought one for my 2004.5 2500HD from them. Looks pretty decent. If no Oreilly's close to you, do a search on the Dorman part nbr which 924-307.

I see advance carries them. any auto store should be able to get a Dorman part

Dorman OE Solutions 924-307 - Trailer Plug | O'Reilly Auto Parts
just for the record DRCook = David R Cook - not Dr Cook, but thanks for the compliment

2004.5 Sport Red Metallic Crewcab Shortbox 4x4 LLY ARE Truckcap/Bedrug liner Bilsteins Hellwigs front and back, LBZ mouthpiece + entire 06 intake, nbr 2 and 7 wiring harness. Racor auxiliary fuel filter, Engineer837 auxilliary radiator, Earl's tranny cooler, fender vents, Banks intercooler & Speedbrake, Merchant Automotive transfer case pump rub fix

Last edited by DRCook; 11-03-2015 at 03:58 PM.
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