What Vehicles Does The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector TK74VR Fit?
Updated 05/08/2026 | Published 05/05/2026
Question:
Some time ago I asked about my 2023 Buick Envision Essence. At that time you had a splice harness for Envisions that didn’t have the tow package. Is this new harness usable for all envisions in that year range?
asked by: Frank D
0
Expert Reply:
Hello Frank, welcome back! The Tekonsha T-One Vehicle Wiring Harness # TK74VR you mentioned fits the 2021-2027 Buick Envision and will work on all models that have a factory trailer connector. If your Envision doesn't have the factory connector, a universal splice-in harness is the only option.
Does yours have the factory trailer connector or no?
expert reply by:
Jesse M
0
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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Frank D.
5/7/2026
Thanks Jesse, unfortunately the vehicle is still under warranty and an unrelated noisey break pad compound is under warranty ( second b pads replaced) also prevents after market changes. I’m not a fan of splicing wires in new or newer vehicles ( not the securest connection). On a humorous side note, my first car was a 1954 MG TF. It caught fire just under the dash while driving. Some spaghetti prior wiring job shorted the dash amp meter. Thankfully I found and fixed it without any further trouble. Great car by the way and I’m hunting another . I’m 73 years old, had some terrific vehicles. Thanks, so I’ll skip doing a hitch on this Buick.