Diagnostic Tools

A must for testing electrical circuits on cars, trucks, trailers, boats, equipment and more Easy to use - Pull out to required length. Leads will ...

Multi-functional design allows testing range of 3–26 volts. Bright red and green LEDs interpret voltage signals such as ground, power, and frequen...

An Assortment of tools specially designed for cleaning all vehicle electrical connections found in commercial heavy duty fleets. Clean Male and Fe...

Relay Buddy 12/24 is a quick go / no-go tester for the most common automotive relays. This new version Relay Buddy tests both 12 and 24 volt relays...

The 3-piece set, Diamond Grip Terminal Cleaners feature a highly-durable and abrasive coatings for cleaning small spade pin electrical connectors. ...

Use on 6v, 12v and 24v electrical systems. No need to remove a fuse, which reduces the amount of time to determine the current in the circuit. Find...

Headlight Adjusting Ratchet for Ford Works on Aerodynamic Headlights with Rear Mounted Adjusters. Tool is used to adjust aerodynamic headlights wi...

Test two new relays with your Relay Buddy! 2 pack of adapters allows testing of two new relay types - commonly used for fuel pumps and other power...

DC Amps 0-6A, 60A (resolution .01A). AC Amps 0-6A, 60A (resolution .01A). Compatible with many lab scopes and graphing multimeters. Use to...

Fundamental Electrical Troubleshooting Complete 200 page guide to every aspect of electrical troubleshooting – explained in a way that makes is us...

Kit Makes Testing Relays or Live Circuits Quick and Easy. Extends the Functionality of a DMM. Turns All Fuse and Relay Boxes into Test Points. Inc...

The TA500's unique and proprietary technology allows the user to perform quick and reliable diagnostics of non-starts, misfires, fouled up ...

This kit includes sizes 14, 16 and 20 Deutsch connectors, both male and female. Tap live readings with included 48 inch stacking banana plug test ...

A must for testing electrical circuits on cars, trucks, trailers, boats, equipment and more Easy to use - Pull out to required length. Leads will ...

A must for testing electrical circuits on cars, trucks, trailers, boats, equipment and more Easy to use - Pull out to required length. Leads will ...

Extend to 10 feet Retract to 2 feet 8 gauge cable

Used for testing electrical circuits. Retractable test leads pull out and stay at desired length. Rewind test leads into its own protective case w...

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' Lea...

Expands the testing capability of your Relay Buddy!!! 3 pack of adapters allows testing of shielded relays. Adapters set cover the same 3 types of...

Designed to test any type of non-live electrical circuit. Track down broken wires, bad grounds and blown fuses quickly. Features and Benefits Comes...

Stop the guess work and repair intermittent electrical connections. Recondition your electrical connections with the 8045 Plow Connector Terminal C...

180 LOADpro Test Leads load the circuit to see if current can flow. LOADpro finds these problems quicker: High Corrosive Resistance Shorts to Grou...

Over 1 Hour of video training included... Includes LOADpro® Dynamic Test Leads, 200 page Electrical Troubleshooting Book, DVD training video - Sull...

ENERGIZE A FUEL PUMP WITH THE PUSH OF A SWITCH! The Relay Bypass Switch with Amp Loop can energize any relay powering a DC motor for testing. Cont...