Amazon.com: DICMIC 4 & 7 Pin Trailer Tow Wiring Harness Plug Compatible with 1999-2001 Ford F250 F350 Super Duty Replace# YC3Z-13A576-CA : Automotive
Amazon.com: Tekonsha 118243 Tow Harness, 7-Way, Compatable with 1999-2001 Ford F-250 Super Duty, 1999-2001 Ford F-350 Super Duty, 1999-2001 Ford F-450 Super Duty, 1999-2001 Ford F-550 Super Duty : Automotive
Amazon.com: 4 & 7 Trailer Plug Wiring Harness Compatible for 1999-2001 Ford F250 F350 Super Duty Trailer Tow Wiring Connector Replace YC3Z-13A576-CA : Automotive
1999-2001 Ford 1999-2001 Ford F250 F350 Super Duty 4 & 7 Pin Tow Trailer Wiring Harness OEM NEW YC3Z-13A576-CA | QuirkParts
7-Way Trailer Wiring Harness Recommendation for 1999 Ford F-250 | etrailer.com
Class 5 Trailer Tow Hitch For 99-01 Ford F-250 F-350 F-450 Super Duty Except Cab & Chassis w/ 7-Way Wiring Harness Kit and Bracket For Models w/ Factory 4-Flat | TrailerJacks.com
Amazon.com: YC3Z-13A576-CA 4 & 7 Pin Trailer Tow Wiring Harness Plug Compatible with 1999 2000 2001 Ford F250 F350 Super Duty : Automotive
Amazon.com: Tekonsha 118241 Tow Harness,4-Way Flat,Compatable with 1995-2001 Ford,1998-1999 Ford Ranger,1998-2001 Mazda B2500,1998-2001 Mazda B3000,1998-2001 Mazda B4000,Mercury Mountaineer YELLOW GREEN : Automotive
Amazon.com: 55243 7-Pin Vehicle-Side Custom RV Blade Trailer Wiring Harness with Connector for Truck Bed Fit for Ford F250 F350 F450 F550 Super Duty : Automotive
Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty) Tow Ready Custom Fit Vehicle Wiring 118243
Amazon.com: 55243 7-Pin Trailer Wiring Plug Harness Compatible with Ford F250 F350 F450 F550 Super Duty 1999 2000 2001 : Automotive
Amazon.com: HOZHEM Truck Bed 7-Pin Trailer Wiring Harness Extension 7ft for 5th Wheel or Gooseneck Trailer, for Ford F150 F250 F350, Dodge Ram 1500 2500 3500, Toyota Tundra, GMC Sierra : Automotive
Amazon.com: CURT 56443 Vehicle-Side Custom RV Blade 7-Pin Trailer Wiring Harness, Fits Select Ford F-250, F-350, F-450 Super Duty, Black : Automotive