How to Power the Lights on a Bike Rack on the Rear of a Trailer
Updated 05/22/2025 | Published 05/20/2025
Products Featured in This Question
Question:
Do they make a 7 pole female to 7 pole male extension that also includes a 4 pole my truck 2022 f150 power boost I want to plug into my 7 pole plug trailer into the 7 pole and rack on the back of trailer has lights plug 4 pole
asked by: Richard R
Expert Reply:
Hey Richard! I've got a couple of options for you. The first is to swap out the factory 7-way connector on your 2022 F-150 with the Hopkins Endurance Multi-Tow 7-Way RV and 4-Way Flat Trailer Connector w/ Bracket item # HM75MV. This will plug directly into your Ford's wiring harness. It has both a 4-way and 7-way connector.
You would then need to make a long enough 4-way plug to reach your bike rack using the 30 ft. Wishbone 4-Way Trailer Wiring Harness with 30" Ground Wire item # A30WB and the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer Connector item # HM48190.
Another option, and the one I recommend, is to use the Hopkins 4-Way Flat Trailer Connector w/ 48" Harness item # HM48035 and splice into the tail light wiring of your trailer. Using a circuit tester like item # PTW2993 you would just have to find the correct functions and splice the harness in using the Self-Stripping Connector with Waterproof Sealant item # SWC501746-1.
What kind of trailer do you have?
Product Page this Question was Asked From
Hopkins Endurance Multi-Tow 7-Way RV and 4-Way Flat Trailer Connector w/ Bracket - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- 4 Flat
- 7 Blade
- Plug Only
- Hopkins
more information >
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Trailer Wiring Diagrams
- Q&A: Will Curt Hitch Impact Liftgate Functionality on 2025 Toyota RAV4 Hybrid With Bike Rack
- Q&A: Recommended 4-Way Connector for a Silverado w/ the Factory 7-Way
- Q&A: Replacement 7-Way for Rear of 1999 Ford F-350 and in Bed
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Looking for Hidden Hitch for 2023 Toyota RAV4
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Q&A: 7-Way Wiring for 2024 Ford F-150 XL
- Q&A: Availability of Replacement 7-Way that Has 4-Way Connector Available as Well
- Article: How to Choose the Right Trailer Hitch Class
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Article: Trailer Hitch Installation Tips
- Article: My Trailer Hitch Doesn't Fit
Richard R.
5/22/2025
So I’m going with the 7blade pin y and then a 7 blade pin to 4 adapter for one side of y and trailer 7 pin for the other. Because the plug on my truck has 2 plugs 12 pin and 7 pin I wouldn’t be able to do a swap cleanly. The Y works with out splicing much cleaner application. Weird you can get a 1ft extension but not just a plug with both 4 pin and 7 that plugs into A 7 pin. Thx Rick