Electrical Testers

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 systems 360° visibility of polarity The red light indicates positive polarity, green indicates negative...

Use to release Deutsch terminals from connectors Provides coverage for larger diameter wire Color coded for easy identification All metal construction with knurled anodized aluminum handles & stainless steel shafts

Use to release Deutsche terminals from connectors Provides coverage for larger diameter wire Color coded for easy identification All metal construction with knurled anodized aluminum handles & stainless steel shafts

Digital LCD 3-48V Wide Range Circuit Tester is computer safe with a backlit LCD display for accurate voltage readouts. Its small, ergonomic design is great for use in confined areas. This tool is ideal for use on cars, boats, trailers, vans, RV's,...

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. If the relay fails the test, 3 different trouble codes will advise you of the possible causes for the...

Tool Aid 28200 12/24/42 Volt Circuit Tester. For use with 12, 24 and 42 volt Hybrid systems Computer safe, draws 3 milliamps at 12 volts Has two (2) LED's foe easy voltage identification: blue for 12 and 24 volts and red for 42 volts Automatic...

Pro kit includes 5 new adapters, greatly expanding relay testing capability 3 new adapters for testing shielded relays 2 adapters allows testing of two new relay types - commonly used for fuel pumps and other powered devices Quick off-the-car...

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. Includes 8 Jumpers to fit most popular relays. Includes Test Lead Kit for easily and securely connecting Relay...

High intensity laser beam not affected by shop light detects RPM from up to 6 ft away Simple operation - just aim at reflective mark to get RPM Memory function saves max & min RPM ratings Great tool for easy & accurate measurement of RPM

Just clamp your current probe over the loop to access the amperage draw through a fused circuit.Easy testing access, plugs right into fuse socket, no more hand made adapters.Testing range 0-30 Amps – Do Not Exceed 30 AmpsCan be used to diagnose a variety...

Fuse Buddy Tester - ATC Blade Blowing Fuses Plug in the FUSE BUDDY and read the circuit amperage draw. FUSE BUDDY can test the circuit amperage draw up to 20 amps. Original fuse is replaced in-line during testing, thereby maintaining circuit protection...

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 Original fuse is replaced in-line during testing, thereby maintaining circuit protection Makes circuit testing...