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® FIREBALL™ Buy now MSA 12′ TRUCK FLATBED w/LED LIGHT KIT Buy now DEXTER 23-106 ELECTRIC BRAKE ASSEMBLY RH 12″ 6K Buy now CASTLE® DOUBLE DRY™ Buy now