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How to convert a 4 way flat trailer plug to a 7 way round trailer plug. Trailer Wire repair. - YouTube
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Amazon.com: TRUE MODS 8ft 7-Way Trailer Plug Wiring w/ 7 Gang Trailer Box [7-Pin Trailer Cord Wire Cable] [Waterproof] 7 Prong Harness Trailer Wire/Cable Connection Junction Box : Automotive
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