Truck-Lite 97101 7-Way Trailer Cable & Circuit Tester (12V-24V Dual Voltage LED Diagnostic Tool)

Isolate electrical faults between your tractor and trailer in seconds with the dual-voltage diagnostics of the Truck-Lite 97101 Trailer Cable & Circuit Tester. Engineered as a premium, heavy-duty diagnostic tool for fleet maintenance garages, commercial truck repair centers, and mobile service mechanics, this 7-way receptacle tester acts as a vital tool to trace shorts, open circuits, and poor grounding before a truck hits the highway.

Serving as the perfect operational companion to the Truck-Lite 97100 lamp tester, the 97101 tester is equipped with both male and female 7-way round-pin connections. It integrates high-quality solid brass pins to ensure maximum, wear-resistant contact integrity during testing sequences. This handheld device features a bright, highly visible LED diagnostic grid that instantly identifies missing power signals or wiring failures within either the tractor's 7-way plug receptacle or the main trailer connector cord assembly.

Designed for global commercial vehicle compatibility, this rugged diagnostic device natively supports 12-volt and 24-volt systems, running flawlessly on both negative-ground and positive-ground electrical architectures. By reducing hours of manual multi-meter probing to a single, instant plug-in verification step, the Truck-Lite 97101 speeds up pre-trip DOT inspections and keeps heavy-duty freight fleets rolling safely.