Check the relay before plugging into the tester. If it's a 4 pin relay,select"4 pin" on the tester.If it's a 5 pin relay, select"5 pin"on the tester. Tester will light the GREEN LED if the test passed, if not light the RED LED.
eBay
Auto Car Brake Fluid Liquid Tester Pen With 3 Colors Backlit Car Diagnostic Tools Mini Brake Fluid Tester For DOT3/DOT4/DOT5.1
Aliexpress UK
Check the relay before plugging into the tester. If it's a 4 pin relay,select"4 pin" on the tester.If it's a 5 pin relay, select"5 pin"on the tester. Tester will light the GREEN LED if the test passed, if not light the RED LED.
eBay
Car Paint Thickness Tester Pen with Scale Portable Car Paint Coating Tester Meter For Car Body Paint Meter Tools
Aliexpress UK
12V 24V Car battery tester LCD Battery Analyzer Test Tool Digital Analyzer Tester for Car Truck Motorcycle SUV Boat and More. The FBT200 battery analyzer can detect all automotive 12v and 24V lead acid batteries, such as regular flooded batteries, AGM flat plate batteries, AGM spiral batteries and GEL batteries for cars, SUVs, light trucks, motorcycles and more.
eBay
Auto HandHeld Vacuum Pistol Pump Brake Tester Brake Clutch Fluid Power Bleeding Tool Set with Adapters for Auto Car Tester Kit
Aliexpress UK
ANCEL BST60 Functions Protection of reverse connection and over current, with fuse built-in. Test all 12V vehicle starting lead-acid batteries. Press the “Battery” button to enter the battery test function.
eBay
Car Accessories Car Battery Checker Universal 12V LED Indicator Light Car Relay Tester Automotive Electronic Relay Tester
Aliexpress UK
RIGHT ELECTRIC TAILGATE GAS STRUT SPRING AUTO BOOT FOR BMW X3 F25 51247232004. FITS BMW X3 F25 REAR RH SPINDLE DRIVE/GAS STRUT SPRING FOR AUTO TAILGATE BOOT. 1 x Relay Tester. CAM VALVE / ROCKER COVER FOR VAUXHALL ASTRA J CORSA D/E INSIGNIA ADAM 1.2 1.4.
eBay
V066 Accurate Brake Fluid Tester Car Auto Oil Moisture Liquid Brake Oil Detection Instrument LED Digital Tester Car Testing Tool
Aliexpress UK
The LUTIFIX Spark Plug Tester ST100 is a specialized tool for testing spark plugs. It supports dual - hole simultaneous testing, allowing two spark plugs to be tested at once, with a protective cover and clear display of spark generation, enhancing testing efficiency.
eBay
Car Paint Thickness Tester Pen With Scale Portable Car Paint Coating Tester Meter For Car Body Paint Meter Tools Paint Thickness
Aliexpress UK
1 Car Circuit Tester（without battery）. Easy operation : After a simple hook-up of the unit to the vehicle's battery, the automotive technician can conduct a positive or negative battery current to the tip by rocking the power switch forward or backward.
eBay
VDIAGTOOL V500 PRO Circuit Probe Tester Auto Car Battery Tester Kit 2in1 Electrical Diagnostic Tool Car Breaker Finder Avometer
Aliexpress UK
Old Sealey Part No. 7520. Proven Reliability: With a rich history of excellence, Sealey tools are trusted by professionals worldwide. Load applied by internal switchgear - no sparking. Suitable for 6 and 12V batteries.
eBay
12V Electronic Relay Tester Professional Automotive Battery Checker Auto Diagnostic Tool Car Relay Diagnostic Car Relay Tester
Aliexpress UK