How To Wire In a 7-way to Replace a Boat Trailer 5-Way Flat
Question:
I have a 5-way flat with 7 wires going into it White, Brown, Brown, Yellow, Green, Red, Red on my boat trailer with brakes. I would like to replace the 5-way flat with a 7-way plug to fit directly to my vehicle without having to use an adapter. My question is, can I use this plug H20046? And if so, how do I connect my current wires to the new 7-way plug? Im confused with what to do with my 2 red wires and 2 brown wires. Also, do I even use the black power wire coming from the 7-way? Thanks for your help!
asked by: Joe
Expert Reply:
You definitely could install the 7-Way Molded Trailer Wire Connector # H20046 in place of the 5-way that is installed on your trailer currently. The colors wouldn't match up exactly. White would go to white, you would run both brown wires to the single green wire of the 7-way. Yellow of your trailer would go to the red wire of the 7-way, and green of the trailer wiring would go to brown of the 7-way.
Now without knowing where the red wires of the 5-way go it's hard to say for certain. You will need to trace them back and see where they go. If they are brakes (most likely not) you would run both wires to the blue wire of the 7-way. If it's for a 12 volt power you would want the black wire of the 7-way. If it's any other circuit it would run to the yellow wire.
Check out the chart I attached as well.
Product Page this Question was Asked From
Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 6 - 10 Feet Long
- Plug and Lead
- 7 Round - Blade
- Hopkins
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Parts Needed to Add 5-Way to 2023 Toyota Tacoma
- Video: Optronics ONE LED Trailer Tail Light Installation
- Search Results: grease
- Shop: ONE LED Trailer Tail Light - 5 Function - Submersible - 3 Diodes - Red Lens - Passenger Side
- Shop: ONE LED Trailer Tail Light - 6 Function - Submersible - 6 Diodes - Red Lens - Driver Side
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Trailer Wiring
- Article: Trailer Wiring Diagrams
- Shop: Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard
- Shop: Brake Controller
- Shop: 35 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 42" Ground
- Shop: 7-Way Molded Trailer Wire Connector, 4' Long
- Q&A: How to Install the Buyers Products Hour Meter B40B45
- Q&A: Converting Trailer from 5-Way Connector to a 7-Way by Function
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Shop: Vehicle Tow Bar Wiring
- Shop: Trailer Wiring Junction Box
- Shop: Tekonsha Push-To-Test Trailer Breakaway Kit with Built-In Battery Charger - Top Load
- Video: Optronics Wiring - Trailer Connectors - A25W5B Review
- Video: Spectro Trailer Wiring Junction Box Installation
- Video: Kuat Transfer V2 Bike Rack Review - 2022 Toyota Tacoma
- Video: RockyMounts AfterParty Swing Away 2 Bike Rack Installation - 2022 Toyota Tacoma
- Video: Hopkins 7-Way RV Style Molded Cable Connector Review
- Video: Buyers Products Wiring 337B40B45 Review
- Search Results: coupler
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Shop: Vehicle Seat Covers
- Shop: Trailer Hitch
- Search Results: bulletproof hitches
- Search Results: 7 way trailer wire
on Trailer Wiring
