The Curt Manufacturing 12 Volt Circuit Tester for 5-way flat trailer connectors (Part Number 57505) helps you quickly verify proper wiring function. Designed for easy use, it provides a simple way to test trailer light circuits and ensure safe towing.
Tests 12-volt circuits on 5-way flat trailer connectors
Helps identify wiring issues quickly and accurately
Easy-to-use handheld design
Ideal for routine trailer maintenance and troubleshooting
