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
- Power Probe®Probe TipUniversal Probe Tip by Power Probe®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering features and...Designed for your maintenance needsMade from high-grade material for a long lifespan$13.56 - $17.38
- Supercool®A/C Total Leak Stop SyringeUniversal A/C Total Leak Stop Syringe by Supercool®. Keep your pride and joy running in tip-top shape with this top-grade automotive product. With it, you can easily and reliably check your vehicle for leaks to ensure its dependable and...Stops small leaks in evaporators, condensers, rubber hoses, gaskets and O-ringsContains U/V Dye for leak detection$20.53 - $27.59
- Autel®MaxiSYS™ 1 Year Software Update Total Care Program CardUniversal MaxiSYS™ 1 Year Software Update Total Care Program Card by Autel®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$850.00 - $1,495.00
- Autel®MaxiSYS™ 1 Year Update and Warranty Total Care Program CardUniversal MaxiSYS™ 1 Year Update and Warranty Total Care Program Card by Autel®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$795.00 - $1,300.91
- OTC®Replacement Cable KitUniversal Replacement Cable Kit 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...Assists in the vehicle’s diagnostics to help maintain its well-beingBuilt to make the process fast, easy, and reliable$135.80 - $154.19
- IPA®Fuse Saver™ Replacement HandleUniversal Fuse Saver™ Replacement Handle by IPA®. These Fuse Saver™ handle replacements come in multiple sizes. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and...Designed for your maintenance needsMade from high-grade material for a long lifespan$28.64
- Power Probe®3CS™ Circuit TesterUniversal 3CS™ Circuit Tester by Power Probe®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Digital voltmeterRelay and component tester$139.78
- Power Probe®3EZ™ Circuit TesterUniversal 3EZ™ Circuit Tester by Power Probe®. The Power Probe 3EZ is a Digital Voltmeter that provides diagnostic power with the flip of a switch. This tool simplifies the testing of fuse boxes, verifies correct operation of motors,...Voltage & Polarity testingContinuity testing$172.08
- Power Probe®Extension WireUniversal Extension Wire by Power Probe®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering features and...Designed for your maintenance needsMade from high-grade material for a long lifespan$21.63 - $121.93
- Power Probe®PP 3™ Circuit TesterUniversal PP 3™ Circuit Tester by Power Probe®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Designed to help to get your job done rightManufactured utilizing the highest quality materials$179.31 - $254.11
- Power Probe®Switch LatchUniversal Switch Latch by Power Probe®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering features and...Designed for your maintenance needsMade from high-grade material for a long lifespan$5.21 - $6.33
- Electronic Specialties®Digital Electrical System and Battery TesterUniversal Digital Electrical System and Battery Tester by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Accurate Battery & Electrical System TesterFeatures programmed test for new Start/Stop Batteries$267.88
- Electronic Specialties®Fuse Buddy™ ATC Fuse TesterUniversal Fuse Buddy™ ATC Fuse Tester by Electronic Specialties®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance...Designed for your maintenance needsMade from high-grade material for a long lifespan$22.26 - $22.63
- Electronic Specialties®Fuse Buddy™ Current LoopUniversal Fuse Buddy™ Current Loop by Electronic Specialties®. 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...Designed to help to get your job done rightManufactured utilizing the highest quality materials$14.96
- Milton®Battery TesterUniversal Battery Tester by Milton®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality...Tests 6 and 12 volt batteriesAnalog display is easy to read$52.11 - $69.41
- Milton®Circuit TesterUniversal Circuit Tester by Milton®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering features and...Designed for your maintenance needsMade from high-grade material for a long lifespan$10.19 - $14.37
- OTC®Replacement BulbsUniversal Replacement Bulbs by OTC®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering features and...Designed for your maintenance needsMade from high-grade material for a long lifespan$16.32 - $668.44
- Associated Equipment®Automatic Battery and Electrical System TesterUniversal Automatic Battery and Electrical System Tester by Associated Equipment®. An automated battery testing unit that uses no dirty, maintenance-prone carbon piles. Just enter the discharge current, press the “start” button and...Easy-to-read LED voltmeter and ammeter500A safety clamps with “Flexi-Spring” and patented side terminal adapters$1,755.57 - $2,075.22
- Associated Equipment®Battery Load TesterUniversal Battery Load Tester by Associated Equipment®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Made in USAOne Year Warranty$900.71 - $1,728.02
- Associated Equipment®Carbon Pile Battery Load TesterUniversal Carbon Pile Battery Load Tester by Associated Equipment®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Designed to help to get your job done rightManufactured utilizing the highest quality materials$145.34 - $1,464.15
- Associated Equipment®Handheld Digital Battery, Alternator, Starter TesterUniversal Handheld Digital Battery, Alternator, Starter Tester by Associated Equipment®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Stores last test series with or without powerBattery test displays:$209.61 - $431.23
- Auto Meter®DPL Technology™ Intelligent Handheld Battery TesterUniversal DPL Technology™ Intelligent Handheld Battery Tester by Auto Meter®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...Tests flooded, deep cycle, and AGM batteries with also detects discharged batteries, bad cells, and has built in reverse polarity protectionThis tester applies a true load to the battery in order to simulate real world operating conditions consistent$414.36 - $906.95
- Auto Meter®Variable Electrical System and Battery Load TesterUniversal Variable Electrical System and Battery Load Tester by Auto Meter®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Designed to help to get your job done rightManufactured utilizing the highest quality materials$579.95 - $2,757.95
- FJC®Battery TesterUniversal Battery Tester by FJC®. The Power Division of FJC is an industry-leading manufacturer and distributor of power electronic products and systems for mobile markets including battery testers, chargers, maintainers, power...Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$35.03 - $363.70
- FJC®Carbon Pile Battery Load TesterUniversal Carbon Pile Battery Load Tester by FJC®. The Power Division of FJC is an industry-leading manufacturer and distributor of power electronic products and systems for mobile markets including battery testers, chargers,...Separate Volt and A metersDesigned to help to get your job done right$142.24 - $430.56
- Lang Tools®Magnetic Retractable Test LeadsUniversal Magnetic Retractable Test Leads by Lang Tools®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs,...Retractable test leads pull out and stay at desired length and rewind into its own protective case when not in useDesigned for your maintenance needs$25.38 - $36.12
- Lang Tools®Retractable Test LeadsUniversal Retractable Test Leads by Lang Tools®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs, delivering...Retractable test leads pull out and stay at desired length and rewind into its own protective case when not in useDesigned for your maintenance needs$14.60 - $29.50
- Launch Tech®Battery TesterUniversal Battery Tester by Launch Tech®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Battery Health with available CCAVehicle starting voltage detection$99.67 - $209.14
- Lisle®Deluxe Relay Tester SetUniversal Deluxe Relay Tester Set by Lisle®. Includes 8 Jumpers to Fit Most Popular Relays. Also Includes Test Lead Kit and Relay Puller Pliers. Jumpers have tabs for clamping and flat pads to place test leads on. No need to pierce...Designed for your maintenance needsMade from high-grade material for a long lifespan$155.82
- Lisle®Replacement BulbUniversal Replacement Bulb by Lisle®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Designed to help to get your job done rightManufactured utilizing the highest quality materials$3.45 - $4.11
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.