Diagnostic & Testing

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...

We have developed the Fuse Budddy Tester and Multimeter Adapter for measuring current at the fuse box. Our design allows for an easy connection into fuse sockets for making current measurements. These can even be used for parasitic drain testing! The...

We have developed the Fuse Budddy Tester and Multimeter Adapter for measuring current at the fuse box. Our design allows for an easy connection into fuse sockets for making current measurements. These can even be used for parasitic drain testing! The...

Relay Buddy is a quick go / no-go tester for the most common automotive relays. It provides you with an indication of the general health and functioning of the relay switch contacts and coil. Relay Buddy will check the control side of the relay by...

Fundamental Electrical Troubleshooting Complete 200 page guide to every aspect of electrical troubleshooting – explained in a way that makes is useful in the shop. Written by a mechanic for real world, hands-on testing. Voltage drop explained...

180 LOADpro Test Leads load the circuit to see if current can flow. LOADpro finds these problems quicker: High Corrosive Resistance Shorts to Ground Open Circuits By loading the circuit, LOADpro makes a voltage drop test “on the fly”. Just press...

This hard working timing light is accurate up to 8000 RPM An extremely bright light will help you time the engine Inductive pick-up clips over spark plug wire - no adapters required Precision focused flash tube for concentrated brilliant light...

Extended length of 64 inches Flexible silicon back probe pins - great for connectors on fuel injectors and MAP sensors Large Crocodile Clips - good for clipping to grounds and battery terminals Includes roll up storage pouch to keep your leads...

This one is the result of interaction with the techs and mechanics at shows and over the phone. Guys have been wiring up fuse holders in their test leads forever. Why? It saves your Multimeter fuse from blowing. You'd rather blow an ATO fuse than the...

Professional Timing Light with High Visibility LED display Measures ignition spark advance from 0-90 degrees 2 and 4 Stroke Tachometer measures engine speed up to 9,999 RPM Brilliant Xenon flash at all speeds Detachable and replaceable cable set...

Over 1 Hour of video training included... Includes LOADpro® Dynamic Test Leads, 200 page Electrical Troubleshooting Book, DVD training video - Sullivan Training System, and Compass for Alternator and solenoid diagnostics Professional Grade True RMS...