Electrical Testers

Checks Both Low Voltage and Spark Plug Wires. The low-side checks AC and DC current up to 28 volts with power on. The high-side checks spark plug wires without piercing. Complete with insulated clip.

Quickly Tests Low Voltage up to 28 Volts. A heavy duty circuit tester for lifetime use. The probe, handle, cord and clamp are reinforced for extra durability. Comes with a strain relief spring on the cord.

Quickly Tests Voltage up to 28 Volts. Heavy duty probe, cord and clamp. The probe is insulated with high-visibility shrink tubing to prevent the possibility of shorting the side of the probe to other components. Comes with a strain relief spring on the...

Quick check both AC and DC current up to 28 volts with power on. Helps locate shorts or breaks in wiring. Complete with insulated grounding clip.

The 6-piece set is designed to clean ALL North American Truck & Trailer Towing Connectors. The unique patented design allows for precise removal of corrosion from both male and female pins, while maintaining proper pin dimensions. The Trailer...

The 12-piece set of round files, ranging from .030" to .120", are specially designed to clean Cannon, Deutsche, Bullet, and other Round Pin Female Terminals. The set includes 12 individual pieces ranging in sizes from .030" -.120". Each tool features a...

The 3-piece set, Diamond Grip Terminal Cleaners feature a highly-durable and abrasive coatings for cleaning small spade pin electrical connectors. For flat and spade style terminals Includes a holster for small, medium and large cleaners

TERMINAL CONNECTOR CLEANERS FOR 4, 5, 6, 7 WAY TRAILER CONNECTORS & MORE! Maintenance Tools For Automotive Connectors & Terminals The First Complete Set of Trailer Terminal Cleaners 4, 5 Flat Connectors, 6 Round and 7-way Spade Pin Terminals For...

Heavy Duty Automotive Logic Probe Computer safe for 6, 12 and 24 volt systems. Dual color LED indicates red for power and green for ground. 6' Lead wire. Extra long insulated probe extends 7" beyond housing for testing hard-to-reach circuits.

Quickly and easily checks electrical circuits and accessories on 6 and 12 volt systems Exta long, high visibility wire stretches for use, then automatically retracts Supersharp probe

Features an extra long wire that stretches up to 12 feet for use, then automatically retracts. Quickly and easily check electrical circuits and accessories on 6 and 12 volt systems. Great for use on cars, trucks, boats, trailers, motorcycles, airplanes...

Heavy Duty Circuit Tester. For 6 & 12 Volt systems. Has heavy duty battery clip at end of 5' of rough, flexible,heavily insulated rubber wire.