Hooking Up New Hopkins 7-Way Connector Harness to Trailer Wiring
Question:
2010 gmc 2500 Sierra had to rewire my trailer I pick up new harness part no 20244 and hook up the wires shown in photo And it did not work I wired it the same way as the old harness red and white were not being used can you please help me thank you for time
asked by: Roland S
Expert Reply:
The Hopkins trailer wiring harnesses like the model 20244 you have feature wire colors that differ a bit from standard setups so this is likely why the new plug isn't working when splicing the wires color to color.
For your 20244 plug, which is similar to our Hopkins # H20043, the wire color functions are as follows:
White - Ground
Red - Left Turn and Brake
Brown - Right Turn and Brake
Green - Running Lights
Blue - Brake Power
Black - 12V Power
Yellow - Aux
In addition to some of the other wires likely being mixed up the fact that the white ground wire is not connected at all right now is probably the reason why nothing is working on the trailer with the new plug installed.
You will want to make sure you connect the wires from the new plug to your trailer wires by function. If you are unsure which wire on your trailer carries which function, your best route is to simply test them by applying 12V power to each to see what function they activate.
Product Page this Question was Asked From
7-Way Molded Trailer Wire Connector, 4' Long
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 0 - 5 Feet Long
- Plug and Lead
- 7 Round - Blade
- Hopkins
more information >
Continue Researching
- Shop: 7-Way Molded Trailer Wire Connector, 4' Long
- Search Results: wires
- Search Results: wiring kit
- Search Results: molding
- Shop: LED Combination Tail Light Kit for Trailers under 80" Wide - Submersible - Driver and Passenger
- Q&A: Converting Trailer from 5-Way Connector to a 7-Way by Function
- Shop: Low Profile LED Flood Light - Angled Beam - 1,000 Lumens - Surface Mount - Clear Lens
- Video: CargoSmart E-Track and X-Track System Board Holder Review
- Video: Rubber Trim for RVs, Boats, and Utility Vehicle Trim Molding - Review SR78FR
- Video: CargoSmart E-Track or X-Track System Shelf Track Brackets Review
- Video: CargoSmart E-Track or X-Track System Fire Extinguisher Holder Review
- Video: Optronics LED Combination Trailer Tail Light Kit Review
- Video: Deka Wiring 16-4B-1 Review
- Shop: Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 10 Diode - Oval - Red Lens
- Shop: Karrier ST205/75R14 Radial Trailer Tire w/ 14" White Spoke Wheel - 5 on 4-1/2 - Load Range D
- Shop: Brophy 5 Gallon Bucket Holder for E Track - Black
- Shop: CargoSmart Folding Shelf Brackets for E Track or X Track Systems - 12" Deep - Qty 2
- Shop: RV Interior Lighting
- Shop: RV Exterior Lighting
- Video: Optronics Trailer Lights - License Plate Lights - LPL12CB Review
- Shop: Trailer Wiring
- Shop: Fifth Wheel Hitch
- Q&A: How to Determine Functions of Wires on Trailer and Recommended Trailer Connector
- Search Results: 7 blade to 7 round adapter
- Article: Trailer Wiring Diagrams
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: 2024 Ford F-350 Super Duty Air Bag Kit Recommendation for an In-Bed Camper
- Article: Brake Controller Installation: Starting from Scratch
on Trailer Wiring
