Looking for Round Trailer Wiring Connector for 7-Way to Plug In to
Updated 12/29/2025 | Published 11/29/2025
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Question:
My RV plug stopped fitting into the socket and I am planning on replacing it. The old one is: https://www.etrailer.com/Accessories-and-Parts/etrailer/ETBC7.html The new one is B0DJ2JJ2S8 The old one from etrailer seems to clip on with molex connectors. The new one presumes a circular connector. Can etrailer sell me the appropriate circular connector, or can etrailer sell me a different socket that is more weather tight, and wont rust so badly the 4-pin part falls off? Please suggest something to buy. The new connector is cheap enough to throw out if that is best. Thanks, Tim
asked by: Tim C
Expert Reply:
Hey Tim, it sounds like what you are looking for is the standard USCAR connector for your 7-way to plug into which we offer with the part # 20147. You'd wire the harness to your current 7-way wiring and then your new 7-way would plug right into it.
Product Page this Question was Asked From
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Accessories and Parts
- Trailer Brake Controller
- Installation Kits
- etrailer
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Jameson C.
12/29/2025
Hey Tim, how did things go with the USCAR connector and your new 7-way plug? Your update could make it easier for others dealing with the same wiring change.