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
- OEM Tools®12 V Digital Battery Tester (24359)Universal 12 V Digital Battery Tester by OEM 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...Clear and Easy-to-Understand Results Indicate System's ConditionAccurate 12V Battery Test Decision in Seconds$55.95
- OEM Tools®Relay Circuit Tester (27211)Relay Circuit Tester by OEM Tools®. The new OEM Relay Circuit Tester is not simply a tool to test a relay. It is a tool that can test an entire circuit from the battery to the component in question. Through its function it will also...Cut Relay Related Diagnosis Time by 75%Identify at the Push of a Button if a Wire, a Part, or a Relay is Defective an Entire Circuit from the Battery to the Component$167.13
- Prime Products®12 V Portable Battery Tester (12-2022)Universal 12 V Portable Battery Tester by Prime Products®. Portable, hand held battery meter is for all types of 12V batteries. Large easy to read color display shows percentage of change. Also indicates undercharge.Manufactured for your battery maintenance tasksBuilt to meet strict quality standards and safety requirements$28.92
- Proform®6 V/12 V Circuit Tester (67408)Universal 6 V/12 V Circuit Tester by Proform®. Quickly check any 6 and 12 volt system with power on to locate shorts, grounds, and open circuits. Your electrical system maintenance will be easier with this high-quality product. It is...Probe Style with Insulated ClipBulb Included$25.10
- QuickCar Racing®Red and Black Alligator Clamps (50-435)Universal Red and Black Alligator Clamps by QuickCar Racing®. 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...Designed for your maintenance needsMade from high-grade material for a long lifespan$6.95
- Replace®12 V Battery Tester (FJC45125)Universal 12 V Battery Tester by Replace®. 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...Designed for your maintenance needsMade from high-grade material for a long lifespan$329.38
- Replace®12 V/24 V/36 V Heavy Duty Battery Tester (FJC45135)Universal 12 V/24 V/36 V Heavy Duty Battery Tester by Replace®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs,...Designed for your maintenance needsMade from high-grade material for a long lifespan$402.88
- Replace®6 V/12 V/24 V/36 V Battery Tester and Electrical System Tester (FJC45150)Universal 6 V/12 V/24 V/36 V Battery Tester and Electrical System Tester by Replace®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical...Designed for your maintenance needsMade from high-grade material for a long lifespan$672.39
- Schumacher®12 V Digital Electrical System and Battery Tester (PST200)Universal 12 V Digital Electrical System and Battery Tester by Schumacher®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Tests load, state of charge, battery condition, excessive starter motor drawOffers complete system diagnosis$81.28
- Solar®12 V 125 A Digital Battery Load Tester (1860)Universal 12 V 125 A Digital Battery Load Tester by Solar®. Designed for portable professional use, SOLAR Model No. 1860 tests battery condition and provides assessment of charging system and starting system performance. Tester...For 12 Volt batteriesTrue 125A Load$35.40
- Solar®12 V Digital Battery Tester (BA5)Universal 12 V Digital Battery Tester by Solar®. 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...Small, portable, pocket-sizedTests multiple battery types$67.03
- Solar®12 V Digital Electrical System and Battery Tester (BA7)Universal 12 V Digital Electrical System and Battery Tester (BA7) by Solar®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system...Small, portable, pocket-sizedTests multiple battery types$101.28
- Solar®12 V Digital Electrical System and Battery Tester (CT7)Universal 12 V Digital Electrical System and Battery Tester (CT7) by Solar®. The CT7 is compatible with a wide range of battery types and provides both a pass/fail assessment and a numerical result for each test performed. This product...Tests 12 Volt batteries and systemsOperating range of 7-15V$67.18
- Solar®6 V/12 V 125 A Battery Load Tester (1850)Universal 6 V/12 V 125 A Battery Load Tester (1850) by Solar®. Delivers a true 125 amp load and is calibrated to test batteries up to 1000 CCA. Designed for portable professional use, the Solar Model 1850 tests battery condition and...For 6 and 12 Volt batteriesTrue 125A load$48.54
- Solar®6 V/12 V Digital Electrical System and Battery Tester (BA44)Universal 6 V/12 V Digital Electrical System and Battery Tester (BA44) by Solar®. The ADROIT-PRO Digital Battery and System Tester for 6 and 12 Volt Batteries is ideal for busy service garages, vehicle dealerships, fleet service...6 and 12 Volt Battery TestingOperating Range: 1.5V-15V$236.56
- Standard®Wire Tool (10096)Universal Wire Tool by Standard®. All Blue Streak® Performance Race wire sets surpass stringent componentry and manufacturing standards set by the North American racing industry, including premium spark plug boots and protective...Designed to help to get your job done rightManufactured utilizing the highest quality materials$24.09
- Thexton®12 V Circuit Tester (852)Universal 12 V Circuit Tester by Thexton®. Portability-Can be used with most all 12 Volt power sources by utilizing the alligator clips for power connection.Also no need to purchase an expensive special additional battery source if user...This allows for more portability and freedom from long battery wiresApplies power and ground$86.82
- Thexton®Electrical Testing and Repair Kit (520)Universal Electrical Testing and Repair Kit by Thexton®. This Electrical Testing & Circuit Repair Kit is designed to test and replace defective terminals. Included in this kit are all of the necessary jumper wires/test leads, circuit...Designed for your maintenance needsMade from high-grade material for a long lifespan$710.85
- Truck-Lite®12 V Light Tester Kit with Power Supply (96259)Universal 12 V Light Tester Kit with Power Supply by Truck-Lite®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance needs,...Quickly checks functions of Truck-Lite LED and incandescent lampsDesigned for your maintenance needs$241.12
- Truck-Lite®12 V Quick Check Lights and Circuit Checker (97100)Universal 12 V Quick Check Lights and Circuit Checker by Truck-Lite®. Your electrical system maintenance will be easier with this high-quality product. It is specially developed and manufactured for your electrical system maintenance...Compact and rugged tester quickly checks function of lamps and wiringCan be used with all Truck-Lite sealed incandescent lamps and wiring systems$44.61
- UView®Battery Extension Cord (590155)Universal Battery Extension Cord by UView®. 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...12' with accessory outletConnects directly to vehicle$20.22
- Interdynamics®1.7 oz. R-134a UV Leak Detection Dye (330)Universal 1.7 oz. R-134a UV Leak Detection Dye by Interdynamics®. Single aerosol application of R-134A A/C system UV leak detection dye, compatible with all PAG and ester oils. Add to system with a normal R-134A hose adapter and...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$11.21
- OTC®25' Nitrogen Coiled Hose for Leak Tamer Plus Evap Smoke Machine (CEA-041)Universal 25' Nitrogen Coiled Hose for Leak Tamer Plus Evap Smoke Machine by OTC®. Optional accessory for No. 6521, 25 ft. nitrogen coiled hose. Keep your pride and joy running in tip-top shape with this top-grade automotive product....Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$87.53
- OTC®Charged Air Cooler Tester Kit (ZTSE4341)Universal Charged Air Cooler Tester Kit by OTC®. This is the easy way to find air leaks in the charged air cooler systems used on class 7 and 8 truck engines. The tester features a large 2-1/2", 0-60 PSI pressure gauge, regulator and...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$390.95
- OTC®Dual Size Schrader Removal Tool (CEA-049)Universal Dual Size Schrader Removal Tool by OTC®. Accessory for No. 6521, assorted cap plug kit. 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$38.91
- OTC®Hose Adapter for Charged Air Cooler Tester (48997)Universal Hose Adapter for Charged Air Cooler Tester by OTC®. 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$98.16
- OTC®LeakTamer EVAP System Kit (6522)Universal LeakTamer EVAP System Kit by OTC®. 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...Find the Leak. Clear the Code. Smoke the TestPut better technology and portability in your shop with OTC's new and improved smoke machine$1,219.11
- OTC®LeakTamer Standard Size Service Port Adapter (6522-4)Universal LeakTamer Standard Size Service Port Adapter by OTC®. 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$55.24
- OTC®LeakTamer UltraTraceUV™ Solution (6522-1)Universal LeakTamer UltraTraceUV™ Solution by OTC®. UltraTraceUV™ bottle (8 oz./236 ml) patented solution is the only Automaker-approved smoke-producing solution in the world. Contains a special dye that deposits at the exact...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$76.82
- OTC®Remote On/Off Switch for Leak Master Evap Testing System (6525-6)Universal Remote On/Off Switch for Leak Master Evap Testing System by OTC®. 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...Perfect solution for leak detectionJust the way to get the job done quickly and hassle free$23.97
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.