Home / Retail Showroom / Trailer Electrical / Wiring Adapter, 4-Way Flat to 5-Way Wiring Adapter, 4-Way Flat to 5-Way Adapters for a quick switch from one style plug to another when towing multiple trailers. 51-20036 Categories: Retail Showroom, Trailer Electrical, Truck Electrical Product ID: 3557 Related products CASTLE® HIGHWAY 95™ Buy now DEXTER 23-106 ELECTRIC BRAKE ASSEMBLY RH 12″ 6K Buy now 3.5K Slipper Spring 1203T3 Buy now Wallace Forge 1/2 x 3 1/2 Hitch Pin With Keeper 12H Buy now