Quickly and easily install a 4-way trailer connector on your GMC C/K Series Pickup with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required.
This custom-fit T-One connector plugs into your GMC C/K Series Pickup's wiring harness, which is located beneath your GMC C/K Series Pickup, along the driver's-side frame rail.
Once installation is complete, the 4-way flat connector will be stowed beneath your GMC C/K Series Pickup, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
Average Customer Rating: 4.9 out of 5 stars (8 Customer Reviews)
by: Troy M.04/19/2012
Ive installed the trailer harness for my 1979 Chevy truck.37715
Nice product, but unfortunately does not work correctly on Military Blazers like my M1009 CUCV. The right turn and brake signals did not work due to the way the original military trailer wiring was done. I had to splice into the military trailer wiring and now this is just doing nothing. Guess i will have to take it back out at some time. It does look to be a decent product for traditional civilian Chevy products.68709
by: Jacqui G.03/08/2012
AWESOME!!! I went to Advance Auto, Autozone, Pep Boys, O'Reilly's and Napa looking for an adapter for my 1976 Chevy C10 Full Size Pickup and flatbed trailer and was out of luck. (In NY and TN.) Ended up with a ticket for no trailer lights. (Prior to learning about bicycle stickon battery operated lights.) Saw your awesome videos on You Tube, helpful pdf files, and product images which made me confident that this was the part I needed. THANK YOU SO MUCH FOR CARRYING THIS!!! Your website and links have been truly helpful in so many ways. This was a super easy hookup and anyone non-mechanical can do it. Came fast through UPS Standard, well-packaged, worked right away. I am super pleased. We got a lot of old pickups running around in Tennessee and I'll be sure to recommend this website to anyone in need!33334
by: Jason P.06/29/2011
Super easy to install and excelleny quality materials.18173
by: Jack A.11/05/2013
I was surprised that this harness was still available for my 31 year old truck. Thanks for having what I needed!106341
just as described could not be any easier plug and play. fast shipping and great price.97126
Well built, perfect plug-in fit. 86226
by: T Lawley05/11/2011
It was great very easy to install no wires to cut. In less than 10 minutes it was hooked up and my son was off pulling his trailer with lights working.13432
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