This Ultra-Tow 4-Way Flat Circuit Tester lets you quickly and easily test and troubleshoot power supply to trailer turn signals, tail lights and brake lights.

Features

• No batteries required
• Plugs into 4-way flat tow plug
• Indicates if tow circuit is properly configured

If you have any questions give us a call during business hours and one of our friendly associates will be happy to assist you. 410-692-5170