Bully Beep Adapter with Built-In Circuit Tester — 6-Way ...

The Bully Beep Adapter with Built-In Circuit Tester converts from one type of trailer wiring connector to another, allowing users to test trailer functions while remaining inside their tow vehicle. Converts from one type of trailer wiring connector to another Test mode allows user to test each trailer function while sitting inside tow vehicle Unit will beep if circuit is in good working order Tests lights, brake lights and other trailer electrical functions