What Does Black Wire In Hopkins 7-Way Molded Connector HM20048 Do?
Updated 04/16/2021 | Published 04/14/2021
Question:
I understand the color code for all the wires coming from the 7-way cord except for the black wire. where does it connect to, and or what other wires connect to the black wire?
asked by: Mike
Expert Reply:
The black wire on the Hopkins 7-Way Molded Trailer Wire Connector - 11' Long # HM20048 you were looking at is for the 12v power circuit that typically gets used to trickle charge an on-board battery, or for powering an electric trailer jack.
If you do not have any accessories on your trailer that use the 12v power from the tow vehicle you can just leave the wire taped up or in the junction box un-used.
I included a video of the # HM20048 for you to take a look at.
Product Page this Question was Asked From
Hopkins 7-Way Molded Trailer Wire Connector - 11' Long
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 7 Blade
- Plug and Lead
- Hopkins
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Article: Trailer Wiring Diagrams
- Q&A: Does Black Wire on 7-Way Go To 12V Power
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Q&A: How to Measure for Offset on Trailer Wheel
- Q&A: Do Hubs have to be Removed to Add Grease to Bearings on an EZ Lube Trailer Axle
- Q&A: Recommended Trailer Wheel Bearing Grease for Dexter Axles
- Article: Trailer Lighting Requirements
- Q&A: Replacement Brake Assembly for Axletek 44-GG
- Q&A: Wiring Trailer Brakes On a 5TH Wheel Trailer
- Q&A: Troubleshooting Rear Brakes on a 2022 Montana High Country 5TH Wheel Locking Up
- Article: The Best Towing Mirrors
- Article: Trailer Maintenance Schedule