Diagnostic & Testing

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.

An Assortment of tools specially designed for cleaning all vehicle electrical connections found in commercial heavy duty fleets. Clean Male and Female Electrical Connections Reduce diagnostic guesswork Extend Harness Life Maintain Proper continuity For...

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...

Have you ever had a blown fuse and wished you had 30 new fuses so you could keep replacing the blown fuse until you found the short? Now the Fuse Saver is here. Just plug in the Fuse Saver's fuse box adapter into the blown fuse socket and...

Included adapters work interchangeably with banana plugs on the 2 x 15-ft. retractable test leads Used for testing electrical circuits in cars, trailers, boats, etc. 15-ft. wire allows you to connect the leads under the hood and test from the driver’s...

Magnetic back allows technician to mount test leads Used for testing electrical circuits Retractable test leads pull out and stay at desired length Rewind test leads into protective case when not in use Contain insulated alligator clips 18 gauge copper...