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 1/2in-20 Plain Flanged Nut 12N Buy now DEXTER 23-26 ELECTRIC BRAKE ASSEMBLY LH 10″ 3.5K Buy now DEXTER 23-27 ELECTRIC BRAKE ASSEMBLY RH 10″ 3.5K Buy now