All-In-One 12V/24V Automotive Circuit Tester Kit
The V200 power circuit probe tester is an essential diagnostic tool for automotive enthusiasts and professional mechanics, designed to quickly and accurately identify electrical issues. It supports comprehensive electrical system testing, including quick self-test, AC/DC voltage testing, diode and resistance testing, polarity testing, continuity and bad ground checks, signal circuit testing, component activation, relay, fuse, and trailer light testing, auto circuit breaker functionality, short-circuit locating, short-circuit protection, and advanced fault finding. Engineered for efficiency and reliability, the V200 delivers precise results across a wide range of 12V/24V automotive electrical applications.
⚠️ Important Notice: To avoid potential damage to your device or vehicle, please follow the instructions carefully before use. If you encounter any issues, feel free to contact our professional customer support team for assistance.
4-in-1 Smart Power Circuit Diagnostic Tool
This power circuit probe tester is an all-in-one diagnostic solution, featuring four essential test modes: DC Voltage (0.1V resolution), AC Voltage (with clear Max/Min readings, frequency, and duty cycle), Resistance, and Diode testing. It allows you to quickly identify live wires and polarity, making it easy to locate shorts and circuit faults with accuracy. Compared to basic testers, the exclusive Tone On/Off function provides audible feedback for circuit voltage changes—ideal for working in noisy or brightly lit environments. Fast, intuitive, and engineered for professionals, it delivers reliable diagnostics for batteries, fuses, alternators, wiring, and more. Compatible with 99% of modern vehicles, including cars, pickups, RVs, boats, and trailers.
Professional Component Activation Testing
The V200 automotive circuit tester speeds up troubleshooting by sending activation signals to car lights, fuel injectors, windshield wipers, radiator fans, and relays—without removing components. It allows you to test parts on the bench, in-vehicle, or using ground connections, making it ideal for both DIY users and professional technicians dealing with complex electrical issues. Designed to quickly pinpoint component failures, it helps save valuable time during automotive electrical diagnostics.
Quick Polarity Detection
The V200 power circuit probe kit enables fast and accurate identification of continuity, polarity, and open circuits—no guesswork required. When the probe tip contacts a positive terminal, the red LED illuminates with an audible beep; when it touches a negative terminal, the green LED lights up with a low tone. No light indicates an open circuit. This intuitive system allows you to quickly verify grounds, trace short circuits, and diagnose blown fuses in seconds, making it ideal for tracking intermittent electrical faults throughout the vehicle. The included alligator clip ground cable ensures stable resistance testing on external components for reliable results.
More Advanced Electrical Circuit Diagnostics
With dual continuity and sensor/signal circuit testing, the VdiagTool V200 makes complex electrical diagnostics faster and more intuitive. It supports voltage and polarity testing, continuity testing, and bad ground contact checks, helping you quickly verify wiring conditions and circuit integrity. Use alternating voltage mode to monitor sensor signals, follow and locate short circuits, activate components, or test trailer lights and connections with confidence. Whether you’re tracing intermittent signal drops or diagnosing failed components, the V200 delivers precise, reliable results to pinpoint electrical issues efficiently across the vehicle.
Smart Overload Protection With Dual Power Supply
Electrical diagnostics should never put your vehicle or tools at risk. The V200 power circuit probe tester kit features smart overload protection with a built-in 8-amp circuit breaker. In the event of an overload, the tester automatically shuts down and resets, protecting both the vehicle components and the tool itself. This function can also be intentionally used to help identify short circuits. The tester is powered directly by the vehicle’s battery or cigarette lighter port, requiring no additional batteries. This dual power option ensures the tool is always ready for use, anytime and anywhere.
40Ft Total Length For Extended Vehicle Coverage
No more dragging tools around or crawling under the dash due to limited cable length. The V200 car probe tool includes a durable carrying case, a 20ft cable, and a 20ft extension cable, providing a total reach of 40 feet. This extended length offers greater flexibility when working on lifted pickups, RVs, travel trailers, or boat trailer lighting systems. Additionally, the built-in flashlight illuminates your workspace, making under-the-hood and low-light diagnostics easier and more efficient. Portable and practical, it’s ideal for shop bays, driveway projects, or emergency roadside repairs.
Portable & Reliable For Multiple 12V/24V Applications
Designed for both professionals and DIY users, this vehicle circuit tester combines powerful diagnostic functions with an ergonomic design and an intuitive interface. Compatible with 12V/24V power sources, it’s not only for cars, but also suitable for motorcycles, trucks, RVs, boats, and trailers, delivering reliable performance across a wide range of applications. Backed by a 2-Year Warranty, 30-Day no-reason replacement or return, lifetime technical support, and free probe replacement, you can work with confidence knowing long-term support is guaranteed.
Packing List & 2-Year Warranty
- 1x VdiagTool V200 Teaster
- 1x Circuit Probe
- 1 x Extension Cable
- 1 x Battery Hookup Clips
- 1x Cigarette Lighter Adapter
- 1 x User's Manual
- 1x Molded Case
V200-FAQs
Powered by the vehicle's battery or cigarette lighter, the V200 features 4 working modes, making it ideal for polarity testing, continuity testing, component activation testing, signal circuit testing, trailer light testing, short circuit testing, and AC pulse width testing.
We keep the probe above the back of the device. (Warm note: Be more careful when operating because of the sharp probe tip.)
Yes, it does come with short circuit protection/overload protection feature. When the circuit shorts out, the V200 probe tester will break to protection both the car electronics and the tool itself.
It supports to test cars, motorcycles, trucks and steamships. For more details, please reach out to us via service@vdiagtool.com or chat with us online directly.
Yes, you can. This power circuit probe tester supports 4 working modes: AC voltage, DC voltage (Resolution 0.1V), Resistance and Diode. And AC voltage can detect the Max. VoItage, the Min. VoItage and Frequency of the circuit under test. For more details or a better price, please reach out to us via service@vdiagtool.com or chat with us online directly.
The V200 has two main modes, which are Mode I circuit tester and Mode II break finder. And in the Mode I circuit tester, there are four working modes-- AC Voltage, DC Voltage, Resistance and Diode and you can activate components as well. For more details or a better price, please reach out to us via service@vdiagtool.com or chat with us online directly.
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