What Is the Black Wire for on the Tekonsha OEM Replacement Vehicle Wiring Harness
Updated 07/31/2024 | Published 07/29/2024
Question:
I see that this piece includes a 12v line that goes to the battery, however the OEM unit doesnt have one. What is the purpose of that line and is it necessary? The OEM unit only plugs into the harness and has a grounding line. Not sure why Tekonsha has an extra 12v
asked by: Chris
Expert Reply:
Chris, I believe the extra 12v line you're looking at for the Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector # 118290 is the power for the ModuLite unit. This isn't standard OEM which is probably why your original didn't have one.
Product Page this Question was Asked From
Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 7 Blade
- Plug and Lead
- Plug-In
- Visible
- Tekonsha
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Trailer Hitch
- Shop: Trailer Wiring
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Search Results: etbc7l
- Search Results: 7 pin to 4 pin adapter
- Search Results: tr20117
- Search Results: 11755
- Shop: Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Search Results: 13615
- Search Results: yakima double down
- Video: Review of Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 118290
- Shop: Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Search Results: 76603
- Shop: Brake Controller
- Video: An In-Depth Look at the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2020 Subaru Ascent
- Video: DIY Install: etrailer Trailer Hitch Receiver on your 2021 Subaru Ascent
- Video: Beginner’s Guide to Installing the etrailer Trailer Hitch Receiver on a 2021 Subaru Ascent
- Q&A: Brake Controller For A 2020 Subaru Ascent
- Q&A: Is There Brake Controller Install Harness that Fits 2019 Subaru Ascent and Prodigy P3
- Q&A: Upgrading 4-Way Harness On a 2020 Subaru Ascent To 7-Way With Trailer Brake Controller
- Q&A: Recommended 7-Way Connector for a 2021 Subaru Ascent
- Q&A: Where Do the Wires on the Universal Install Kit for Trailer Brake Controllers Get Installed?
- Video: Install: T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector on a 2019 Subaru Ascent
- Video: Installing the Curt Trailer Hitch Receiver on your 2018 Ford Edge
- Shop: Roof Rack
on Custom Fit Vehicle Wiring
Christopher
7/31/2024
I connected it without the 12v line and seem to have all trailer items running. Turn signal, brakes, etc. The module is running fine so I think that 12v is only to power the 12v connection to the trailer. Not a major concern for me but it's still confusing as OEM pulls that power from the module without an additional line.