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Amazon.com: DOAUTO 29Ft 5-Way Flat Trailer Wishbone Wiring Harness Extension Kit, 25' Male & 4' Female Ends Connector SAE J1128 18-Guage Wiring Extiondsion 12V DC with Auxiliary Blue Brakes for Boat Trailer :
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7-Way Blade to 5-Way Flat Trailer Adapter Nickel-Plated Copper Terminals Rugged Nylon Housing Compact Design 7-pin to 5-pin Trailer Wiring Plug Adapter - Walmart.com
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T-H Marine 5-Way Trailer Wire Harness | 24-in Trailer Harness with Color-Coded Wires in the Trailer Parts & Accessories department at Lowes.com
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