4-Way to 7-Way Adapter for Trailer Light Functions
Updated 02/03/2026 | Published 07/25/2024
Question:
My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug. Is there an adapter for just pulling the trailer a few times without having to rewire anything. Thanks
asked by: Jack C
Expert Reply:
Thanks for reaching out, Jack!
What I recommend using is the Curt Adapter # C57672 and securing it to your vehicle with the No-Drill Bracket # 18136. This gives you the ability to seamlessly use either the 4-Way or 7-Way connection but doesn't require you to wire up the 7-Way to be fully functional.
For a quick solution we have the Hopkins Adapter # HM54RV, but this won't have any support for the connectors so I see them wearing down so I don't recommend going that route.
Product Page this Question was Asked From
Curt Trailer Connector Adapter - 4-Way to 7-Way RV and 4-Way Flat
- Custom Fit Vehicle Wiring
- Wiring Adapters
- Universal Fit
- 4 Flat to 4 Flat
- 4 Flat to 7 Blade
- Plug and Lead
- CURT
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on Custom Fit Vehicle Wiring
Samuel C.
2/3/2026
Hey Jack, how did the Curt adapter and bracket setup work out for your trailer connection? Did it give you the flexibility you needed without having to rewire anything? Your update could make it easier for others facing the same plug mismatch.