Amazon.com: CURT 58140 Trailer-Side 7-Pin RV Blade
It can be used to connect the taillights, brake lights, reverse lights, turn signals, trailer brakes and auxiliary power. VERSATILE DESIGN. This connector makes a great replacement 7-way RV blade connector and is interchangeable with virtually any trailer-side 7-way RV connector. 7-pin trailer wiring is commonly used for towing RV travel trailers.
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