What Does the 12v Power Wire to the Battery Do for the Curt Wiring Harness on a 2017 Grand Cherokee?
Updated 11/17/2025 | Published 12/01/2024
Question:
I’m a bit confused about why the C62VR needs. Power wire running to the battery? Doesn’t it just pick up power from the light connections?
asked by: Andrew
Expert Reply:
No, it gets the signals from your Jeep's tail lights. The 12v power wire on the Curt T-Connector Vehicle Wiring Harness item # C62VR is what powers the converter which is what tells the trailer to activate the tail lights. This has to be wired directly to the battery in your 2017 Jeep Grand Cherokee.
I have linked an installation video below so you can see how to get this wiring harness installed.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Hidden
- CURT
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Jerred H.
11/17/2025
Hey, how did things go getting the Curt wiring harness connected to your Grand Cherokee’s battery? Sharing how the wiring process went could help others working on the same setup.