Product: OTC 3642 Truck Electrical Circuit Tester - 12V-24V with 24 Foot Cord
Brand: OTC
OTCs Truck Circuit Tester is designed for testing electrical circuits and locating shorts, grounds, and open circuits
For use on 12V - 24V systems
Features a 7 inch long stainless steel probe
Red coiled cord stays compact until you need more length then has the capability of stretching to a full 24 feet
Extra large clamp can be attached to larger nuts, bolts, and other grounds than a typical smaller clamp

Search query: 24 volt led tester
Relevance: Substitute