Diagnostic & Testing Tools
- Code Readers & Scanners
- Anti-Freeze & Coolant Testers
- Electrical Testers
- Timing Lights
- Fuel System Testers
- Ignition Testers
- Brake Testers & Measuring Tools
- Coating Thickness Gauges
- Oil Pressure Test Tools
- Engine Compression Testers
- Diagnostic Leak Detection
- Headlight Alignment Systems
- Suspension Testers
- Vehicle Scales
- Refrigerant Identifiers
- Window Tint Meters
- Exhaust System Testers
- Auto Inspection Cameras & Scopes
Featured Brands
- S&G Tool Aid®Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester (34840)Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester (34840) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...Designed to help to get your job done rightManufactured utilizing the highest quality materials$59.19
- S&G Tool Aid®M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35670)M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35670) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...Designed to help to get your job done rightManufactured utilizing the highest quality materials$20.58
- S&G Tool Aid®M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35400)M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...Designed to help to get your job done rightManufactured utilizing the highest quality materials$52.35
- S&G Tool Aid®M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35250)M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35250) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...Designed to help to get your job done rightManufactured utilizing the highest quality materials$51.87
- S&G Tool Aid®M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35000)M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...Designed to help to get your job done rightManufactured utilizing the highest quality materials$18.51
- S&G Tool Aid®M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34900 Diesel Engine Compression Tester (34730)M10 x 1 mm Glow Plug Diesel Compression Test Adapter for 34900 Diesel Engine Compression Tester (34730) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...Designed to help to get your job done rightManufactured utilizing the highest quality materials$15.62
- S&G Tool Aid®M10 x 1.25 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35660)M10 x 1.25 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...Designed to help to get your job done rightManufactured utilizing the highest quality materials$26.33
- S&G Tool Aid®M10 x 1.25 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35550)M10 x 1.25 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...Designed to help to get your job done rightManufactured utilizing the highest quality materials$20.40
- S&G Tool Aid®M10 x 1.25 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (34950)M10 x 1.25 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...Designed to help to get your job done rightManufactured utilizing the highest quality materials$17.18
- S&G Tool Aid®M12 x 1.25 mm and M18 x 1.5 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (34780)M12 x 1.25 mm and M18 x 1.5 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using...Has piggy-back 12mm-1.25 & 18mm-1.50 threads for testing at glow plug portDesigned to help to get your job done right$36.69
- S&G Tool Aid®M12 x 1.25 mm and M18 x 1.5 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (34880)M12 x 1.25 mm and M18 x 1.5 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using...Designed to help to get your job done rightManufactured utilizing the highest quality materials$27.43
- S&G Tool Aid®M14 x 1.25 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35650)M14 x 1.25 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35650) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...Designed to help to get your job done rightManufactured utilizing the highest quality materials$29.14
- S&G Tool Aid®M21 Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35680)M21 Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Designed to help to get your job done rightManufactured utilizing the highest quality materials$106.94
- S&G Tool Aid®M21 Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester (34800)M21 Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Designed to help to get your job done rightManufactured utilizing the highest quality materials$71.02
- S&G Tool Aid®M24 x 1.5 mm Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35150)M24 x 1.5 mm Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35150) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...Designed to help to get your job done rightManufactured utilizing the highest quality materials$46.99
- S&G Tool Aid®M24 x 2 mm Fuel Injector Diesel Compression Test Adapter for 34700 and 34900 Diesel Compression Tester (34740)M24 x 2 mm Fuel Injector Diesel Compression Test Adapter for 34700 and 34900 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...For testing at fuel injector portDesigned to help to get your job done right$22.32
- S&G Tool Aid®M25 x 1.5 mm Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35730)M25 x 1.5 mm Fuel Injector Diesel Compression Test Adapter for 34700 Diesel Compression Tester by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...Designed to help to get your job done rightManufactured utilizing the highest quality materials$80.86
- S&G Tool Aid®M8 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35740)M8 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35740) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...Designed to help to get your job done rightManufactured utilizing the highest quality materials$70.78
- S&G Tool Aid®M8 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35450)M8 x 1 mm Glow Plug Diesel Compression Test Adapter for 34700 Diesel Compression Tester (35450) by S&G Tool Aid®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...Designed to help to get your job done rightManufactured utilizing the highest quality materials$25.23
- Autel®3-piece Diagnostic Adapter Kit (TESKIT)3-piece Diagnostic Adapter Kit by Autel®. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution that will help make automotive diagnostic scanning fast and easy. It’s crafted using the finest...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$129.00
- OTC®Kelsey Hayes ABS Cable (238464)Kelsey Hayes ABS Cable by OTC®. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution that will help make automotive diagnostic scanning fast and easy. It’s crafted using the finest materials and...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$112.63
- NEXIQ®1 m 6 and 9-Pin "Y-Type" Deutsch Adapter (402048)1 m 6 and 9-Pin "Y-Type" Deutsch Adapter by NEXIQ®. 6- and 9-pin Deutsch "Y" adapter for use with the USB-Link™ and the WVL2™. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution that will help...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$407.36
- NEXIQ®6 and 9-Pin Deutsch Cable (493148)6 and 9-Pin Deutsch Cable by NEXIQ®. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution that will help make automotive diagnostic scanning fast and easy. It’s crafted using the finest materials...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$375.64
- NEXIQ®9-Pin CAT Adapter (493015)9-Pin CAT Adapter (493015) by NEXIQ®. Designed with maximum accuracy and precision in mind, this tool is the ultimate solution that will help make automotive diagnostic scanning fast and easy. It’s crafted using the finest materials...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$235.63
- NEXIQ®Pro-Link iQ™ Caterpillar Electronic Engines Software (889024)Pro-Link iQ™ Caterpillar Electronic Engines Software (889024) by NEXIQ®. The Pro-Link iQ Caterpillar Electronic Engines software application provides reprogramming and diagnostic capability for CAT electronic systems. With the...Easy to usePortable$1,232.39
- IPA®6-piece Master Fuel Pump Relay Bypass Kit (9038)6-piece Master Fuel Pump Relay Bypass Kit by IPA®. Energize a Fuel Pump with the Push of a Switch! The Fuel Pump Relay Bypass Master Kit combines the most popular fuel pump relay applications. The 6-piece kit allows fuel pressure to be...Actuates fuel pump when the engine is not runningPlugs in place of relay$63.71
- IPA®6-piece Relay Bypass Kit with Amp Loop (9038A)6-piece Relay Bypass Kit with Amp Loop by IPA®. Energizes a Fuel Pump with the Push of a Switch! The Relay Bypass Switch with Amp Loop energizes fuel pumps and any 12V relay by powering a DC motor for testing. It also makes DC motor...Controls relay circuits independent of "key-on/key-off" systemsRun automotive, 12V DC motors with a push of a switch$89.96
- OTC®IAC Idle Air Signal Test Light (3053S)IAC Idle Air Signal Test Light (3053S) by OTC®. Node Lite - For checking the electronic control module signal that provides direction to the idle air control motor on General Motors vehicles with throttle body or port fuel injection...Designed to help to get your job done rightManufactured utilizing the highest quality materials$37.97
- Lisle®II™ Relay Jumper Circuit Tester Kit (60610)II™ Relay Jumper Circuit Tester Kit by Lisle®. Set makes testing relays or live circuits quick and easy. Set includes four jumpers to fit many popular relays on Honda, Nissan, Toyota, newer Ford and GM mini micro relays as well as...Designed for your maintenance needsMade from high-grade material for a long lifespan$66.56
- Lisle®Relay Jumper Circuit Tester Kit (56810)Relay Jumper Circuit Tester Kit by Lisle®. 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 on domestic and import vehicles. Simply remove...Designed for your maintenance needsMade from high-grade material for a long lifespan$66.56
With today’s high-tech computer and electronics packed vehicles, electronic testers and diagnostic equipment have become the main weapons in the vehicle service arsenal, so we’ve stocked our digital shelves with scan tools, multimeters, analyzers and much more. When you’re armed with these electronic tools, you’ll be able to defeat any CHECK ENGINE light, blown fuse, balky window, recalcitrant alternator, or any other electrical malfunction with ease.
Electronic testers range from simple jumper wires, also called test leads, to sophisticated engine scan tools. Test leads allow you to bypass a circuit and directly test a component by applying 12 volts from the battery. Test lights, also called circuit testers, are essential tools for determining whether voltage is present at particular points in circuits. There are circuit powered and self-powered test lights, also known as continuity testers.
Test lights can tell you whether voltage is present, but they can’t tell you how much. For specific values you need a voltmeter, which is routinely packaged with an ohmmeter and ammeter in an electronic tester called a multimeter. There are analog meters that have a needle and a scale, but Digital Multi-Meters (DMM), also known as Digital Volt Ohm Meters (DVOM) are necessary for computer controlled circuits. Voltmeters can display the amount of voltage, such as when testing a battery or charging system, and test voltage drop. Ohmmeters measure resistance in a circuit and ammeters measure current flow.
A scan tool provides access to your vehicle’s computer control system via a cable connected to the Data Link Connector (DLC). With a scan tool you can read the Diagnostic Trouble Codes (DTCs) that cause CHECK ENGINE, Air Bag, and ABS dash lights to illuminate. Tool capability varies, and some can also read, record, and playback sensor data, display I/M monitor status, read and display freeze frame data, download to a PC, and be updated via USB port. In addition to erasing DTCs, some scan tools can also be used to reset oil lights and other warning lights.
Along with the above mentioned essentials, we also have many more diagnostic time savers including noid lights to check fuel injectors, current probes to measure current without disturbing the circuit, battery testers, infrared thermometers for instantaneous temperature indication, inspection cameras for peaks into the smallest places, and much more. And if you have an older, pre-computer controlled vehicle we have the tools you need to make adjustments and keep your vehicle running right, like timing lights to check initial timing and timing advance, and dwell/tachs to set breaker points and idle speed.