Electrical Testers

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...

Set of Three Terminal Tools and Handle for Removing Wires from Terminals Without Damage Terminal tools work on conventional terminals as well as P...

Contains terminal release tools for most domestic, European and Japanese cars and trucks Application reference chart included

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...

Heavy-Duty Circuit Tester with Digital LCD Display to Accurately Show DC Voltage. Operating range of 3-49 volts DC to work on most vehicle electri...

Voltage drop test with the push of a button Finds corroded wires/connections and shorts to ground Diagnose faster and earn more $$$ - works with y...

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...

Set of Four Relay Test Jumpers Make Testing Relays or Live Circuits Quick and Easy. Set includes four jumpers to fit the most popular size relays ...

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

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...

The Allstart OBD2 memory saver is an accessory that works with the Micro Boost and Boost Portable power units, as well as most other Lithium Jump S...

Provides a good ground for test light and multimeter diagnostic use Especially useful in the auto industry where testing is Especially useful in t...

A 2-in-1 Tester that Tests Circuits up to 28 Volts and Works as a Jumper Wire for Power or Ground Heavy-duty circuit tester for checking low volta...

Blowing Fuses? Plug in the Fuse Buddy and read circuit amperage draw on your DMM Adapts your DMM to plug directly into ATC Blade fuse socket Origi...

ATO fuse holder in-line Provides extra overload protection Can prevent your DMM's internal fuse from blowing For use with any digital multi-meter

Heavy Duty Tester Signals With A Light And Buzzer The tester kit tests low voltage up to 28 volts Also finds electrical shorts, checks polarity, d...

Heavy-Duty Circuit Tester with Digital LCD Display to Accurately Show DC Voltage Operating range of 3-30 volts DC work son most vehicle electrical...

Use this device with audio signal to indicate when intermittent short circuit occurs with vehicle at rest or on road test After faulty system is i...

Use to locate shorts quickly and inexpensively in 12 volt automotive circuits Eliminates need to remove upholstery and floor coverings Operates th...

The new Fuse Buddy Pro Kit can read amperage Draws on both ATC and Mini fused circuits up to 30 Amps As an added bonus, the Fuse Buddy Pro can be ...

Fully graphical display solves language barrier issues Multi-function testing of battery, starter, alternator, earth ground Test 12V batteries and...