Is The Ground Connection Incorporated Into The Plug On The Curt T-Connector C53VV?
Updated 09/17/2025 | Published 09/12/2025
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Question:
I am looking at Wiring harnesses for my 2025 Sienna. I see that T-one harness It has a separate ground wire but the Curt harness does not. Is the ground incorporated into the Curt harness connector?
asked by: Len C
Expert Reply:
Hi Len!
I had not noticed that before. I asked and Curt does indeed integrate the ground into the plug in connection on a lot of their wiring harnesses and the # C53VV T-Connector is one of them. Tekonsha almost always has a separate ground that needs to be drilled in by the installed, but they actually do it from time to time as well.
With that being said, I would go with the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # TK69FR. It may be a slightly more difficult install due to that ground, but I have found their harnesses to be the most reliable. It's the one to get.
What are you going to be towing?
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Tekonsha
more information >
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Len C.
9/17/2025
Lazar, Thanks for the reply. Since I hadn't heard a reply in a few days I called your support line and got the confirmation that the ground was incorporated in the Curt. Unfortunately I've already ordered the Curt harness so can'r follow your recommendation on the T-One. It shouldn't a problem anyway because the harness will be rarely used. Thanks again, Len