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4 Flat to 5 Flat Wiring Adapter  

Updated 08/27/2026 | Published 08/21/2026

Question:

Do you have a 5 pin female to 4 pin male adapter to join the two different plugs on car and van. Car has a 5 pin male Van has a 4 pin female

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Expert Reply:

Thanks for reaching out Paul. We do carry the Curt Trailer Connector Adapter - 4-Way Flat to 5-Way Flat # C57187 which has the configuration you're looking for. This adapter is typically used to convert a vehicle side 4 flat connector to a 5 flat connection for specific trailer applications when a reverse light circuit is needed.

Can you give me a little more detail as to what you are trying to accomplish with the adapter?

expert reply by:
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Christopher H
Paul S. profile picture

Paul S.

8/27/2026

Hi thanks . All sorted now

Christopher H. profile picture
Etrailer Expert

Christopher H.

8/27/2026

@PaulS Happy to hear you got it figured out! Let us know if you need anything else.

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