Hopkins Tow Doctor Vehicle Wire Harness Test Unit

Hopkins Tow Doctor Vehicle Wire Harness Test Unit. Tests all tow vehicle functions: ground auxiliary power brake direction and backup. Adapts to 4-Wire Flat 6-Pole Round or 7 RV Blade. Heavy duty 20 ft. extension cord is included. Features of Hopkins 50918 Tow Doctor Vehicle Wire Harness Test Unit Designed so that one person can make sure a vehicle wiring harness has been installed properly and all functions are working Saves the time and cost of a second person at the rear of the vehicle Tests all tow vehicle functions: ground auxiliary power brake direction and backup Adapts to 4-Wire Flat 6-Pole Round or 7 RV Blade (7-Way Pin type available: Hopkins 50944) Heavy duty 20 ft. extension cord is included Package Contents: Hopkins 50918 Tow Doctor Vehicle Wire Harness Test Unit Hopkins 50918: Tow Doctor Vehicle Wire Harness Test Unit