ANCEL PB100 vs OBDResource CP30 vs AWBLIN Power Probe: Best Advanced Circuit Tester? If you’re looking for an advanced power probe that goes beyond a simple test light, choosing between the ANCEL PB100, the OBDResource CP30, and the AWBLIN Power Probe can be tricky. I’ve tested all three to see which one actually saves you … Read more

NOWHYX Automotive Circuit Tester 3-48V Review I’ve been burned before by guessing which wire is hot or ground on my truck, wasting hours with a multimeter. That’s why I grabbed the NOWHYX Automotive Circuit Tester — it’s a simple test light with a digital readout that works from 3 to 48 volts and shows polarity … Read more

You bought a test light kit expecting it to handle everything, but it did not include probes for relays. This is frustrating because testing relays is a common job for any DIY mechanic or car enthusiast. Most manufacturers assume you will buy specialty relay probes separately to keep basic kit costs low. I learned this … Read more

Needing a special battery type for your test light is a minor annoyance because it adds an extra errand to your day. You cannot just grab any battery from the junk drawer when your light dies. That specific battery is often harder to find and more expensive than standard ones. I have wasted twenty minutes … Read more

Bfminitool Power Circuit Probe Tester Review I’ve been burned more times than I’d like to admit trying to trace a short in my car’s wiring with just a multimeter and a prayer. The Bfminitool Power Circuit Probe Tester covers a 3.5V to 36V range and comes with a 14.7 ft lead, so I can reach … Read more

OTC 3642 Truck Circuit Tester 12V-24V Review I’ve spent way too many hours chasing electrical gremlins in my truck’s wiring Use, so I grabbed the OTC 3642 Truck Electrical Circuit Tester – 12V-24V with 24 Foot Cord,Red hoping it would save me some headache. With a 7-inch stainless steel probe and a 24-foot coiled cord, … Read more

ATOBLIN vs KAIWEETS vs AWBLIN: Best Bidirectional Circuit Tester for Car Battery? I’ve spent time testing three popular bidirectional circuit testers: the ATOBLIN Test Light, the KAIWEETS Smart Automotive Test Light, and the AWBLIN Automotive Test Light. Each one promises to make diagnosing car battery and fuse issues easier, but they differ in voltage range … Read more

I have seen many people ask why their test light only allows a 20A measurement for ten seconds. This limit protects the tool from overheating and damage during high current tests. The short time frame prevents the internal shunt resistor from burning out. In my experience, exceeding this limit can permanently ruin your test light’s … Read more

You might be getting an opposite polarity reading on the green light of your test light because it is a polarity-sensitive tool. This matters because a wrong reading can make you think your wiring is faulty. I have seen this confuse many DIYers who are just trying to fix their car or home. The green … Read more