9 best automotive circuit testers for professionals The JASTIND Heavy Duty 3-65V Backlit Digital LCD Circuit Tester is the best automotive circuit tester for professionals because it reads 3-65V on a backlit LCD screen and reaches tight spots with a 140-inch extended spring wire. I compared 9 testers and ranked them best to worst based … Read more
WINAMOO vs FEAOXYO: Best Circuit Tester for DIY Car Repair? WINAMOO is the better pick for DIY car repair because it carries both CE and UL certification and a 200-gram body, while FEAOXYO suits tighter spaces with a lighter 0.12 kg build. Both test lights cover a 3V-48V range at 0.1V resolution with a 96-inch … Read more
AWBLIN vs EVOULTES Test Light: Best Circuit Tester for Auto Repair? AWBLIN is the better pick for daily automotive circuit testing because it measures 3-60V DC with a clear LED voltmeter, while EVOULTES suits anyone who wants audible feedback with its 3-72V range and buzzer. The AWBLIN’s 102-inch spring wire and single red/green polarity LED … Read more
VDIAGTOOL V200 Pro Automotive Circuit Tester Review The VDIAGTOOL V200 Pro Automotive Circuit Tester is a 2-in-1 power circuit probe and breaker finder best suited for DIYers and technicians chasing electrical gremlins, and it delivers a 20ft cord plus a 20ft extension cable. The tester handles 12V and 24V systems, weighs 1.48 kilograms, and carries … Read more
FEAOXYO vs Feikenee Test Light: Best 6-24V Circuit Tester? FEAOXYO vs Feikenee Test Light: Which Circuit Tester to Buy? FEAOXYO Test Light Automotive is the better pick for most buyers because of its longer 39-inch PU wire and stainless steel probe, while Feikenee Test Light Automotive suits anyone who wants a more compact tester with … Read more
JASTIND 3V-48V LED Digital Automotive Test Light Review The JASTIND Automotive Test Light with 3V-48V LED Digital Readout is a circuit tester best suited for DIYers and working techs chasing electrical gremlins, and it delivers clear voltage numbers instead of a vague glow. The 3V-48V range covers cars, motorcycles, trucks, and boats, and the 96-inch … Read more
The borescope camera tip overheats on hot engines because the LED lights and image sensor sit in a small, sealed metal housing with no airflow to carry heat away. Ambient heat from the engine adds to the heat the electronics already generate, and the tip keeps climbing until it shuts down. I learned this the … Read more
WINAMOO 5-90V Digital LED Circuit Tester Review The WINAMOO Automotive Test Light 5-90V Digital LED Circuit Tester is a corded electrical tester best suited for DIYers chasing car, RV, and trailer wiring gremlins, and it delivers a clear LED voltage readout across a 5-90V range. It weighs 200 grams and its spring wire stretches to … Read more
Inspecting a new radiator for debris before install with a borescope means feeding the camera probe into the inlet and outlet ports and the top hose neck, then slowly sweeping the tank and core tubes while watching the screen for metal shavings, sand, or casting grit. A flexible probe around 5 to 8 mm wide … Read more
Wrapping a tennis ball around the probe head creates a soft, round bumper that keeps the camera centered and stops the lens from scraping duct walls. The ball’s curved surface glides along the metal, so the probe slides forward without snagging on seams or rivets. I cut a small X in the ball, push the … Read more