VDIAGTOOL V200 Pro Power Circuit Probe Tester, Automotive Circuit Tester Breaker Finder Tool, 12/24V Electrical Open Short Circuit Finder for 99% Cars, Wire Tracer, AC/DC Trailer Relay Fuse Test

When I was made aware of this tester, I wanted it yesterday. I ordered it on March 1st and it came on March 6th, which is really fast. Usually it takes 2 weeks to reach Hawaii. I have around 26 testers and just a handful is shown in one of these pictures. I still have my first tester which I made with a metal rod, light bulb, wire, and an alligator clip. These testers have sure come a long way since 1975 when I lst began working on cars. I have a Auto mechanics college degree and owned 170 cars since driving. Now days cars have a lot of electrical circuits and this tester is vital to have and own along with a good scanner, and a smoke detector for the EVAP system.I got this Vdiag Pro 200 tester and just by coincedence my neighbor's cars had starting and electrical issues. One I found a bad ground, one was a dying battery, one had a faulty starter, and my own truck had an exposed hot wire has you can see in one of the pictures. I was actually looking to see the tool in tight spaces like between the radiator support and grill when I saw this exposed wire. I tested it with this tool and it was hot. Using the tester I pushed the button and it lit up my auxillary fog lights. The tester fit well with my hand holding it inbetween the grill and radiator support..The accuracy is really good as I have tripled checked it with other name brand testers you will recognize in the photos. I have a boat, riding mower, motorcycles, and 5 cars that I have tried this tester on.The quality of the tools is very good. The connectors are tight and the probing needle fits snugly. The fit is really good so while taking the wire from the front of the car to the back of the boat trailer, you can count on the connector holding and not coming apart like a extension cord usually does and you have to make a over under knott.Everything this company claims this tester can do is true. I even showed this to my mechanic friends and they were impressed. All of us use the P Probe and my P Probe III is in one of the photos. I have the P Probe from I to III and have no regrets. Now that I have this Vdiag Pro 200, it will be my go to tool. Before I had to carry a wire tracer seperately and was either the telephone one you see in the picture or my landscaping one for tracing sprinkler wires to trace my truck, car, and boat wiring. Now I have the best of both worlds in one easy to carry and store plastic case.I really have nothing bad to say. The screen is easy to see in bright sunlight, enough wire to reach from the front of the tow vehicle to the rear of the boat trailer. Built with quality materials, easy to use. The most important thing is it is highly accurate as you can see in one of the photos the other two tester I compared it with.Do not hesitate to buy this tester! Your life will be more enjoyable when working on electrical circuits especially if you work on cars, boats, motorcycles, your kids powerwheels, and even your home. Just make sure you turn off the power to your home when tracing your outlet to your fuse box. Not made to test live 120v or 240v AC home circuits. Only DC voltage from 12 to 24 volts DC.You will not be disappointed, I have been using this tester for a week now and it is accurate which is the most important feature for me and it is half the cost of other testers with more features. This tester is made for 12v DC to 24v DC so you can even test some of your power tool batteries that is within range.

I am a serious DIY automotive enthusiast. I am also an electronics engineer. I purchased the Vdiagtool V200 Pro to assist me with a vexing electrical problem. I bought the V200 Pro after watching a YouTube video and anxiously awaited receiving it. I was impressed with the obvious build quality. The wires are well insulated and flexible. It feels great in the hand.I have a 2010 Ford F150 with a 5.4L V8. I had it parked in my back yard and rodents got into the engine compartment and chewed up some of the wiring. It also had a problem with the AC clutch compressor being inoperable. The engine ran poorly with multiple misses and engine light came on and could not be reset.I used a code scanner to determine three of the injectors were not working. The wiring goes from the injector into a harness that disappears into a loom. I placed the V200 into AC mode and started the car. I then went to the injector connector and touched the terminals of the injector…. nothing. I then used a small terminal to connect the red wire of the probe to the injector and set it to signal trace mode. I grounded the black wire. I then ran the signal tracer over the wiring harness while listening to the “warble.” It took less than 60 seconds to trace the harness to the point where the signal stopped. It was buried inside a complicated and loaded harness. Closer inspection showed there were visual indications of the wire chewed in two pieces on the bottom of the harness by those pesky rats. I would have had great difficulty finding it with another method.I was able to repair the harness by cutting the loom and soldering the wires back together. I then found two other wires the same way. The engine was now running great! No misfires and the injectors all working! I then began to play with the V200 in its normal voltage measuring function. The engine was running and I noticed that the voltage of the battery was 12.2 VDC instead of the expected 14.4 volts.Those pesky rats were at it again. With the help of the V200 I quickly located the wire to the field terminal of the alternator. It was chewed at the connector. A quick repair and all is well. Having such a good day I decided to look at the nonfunctional AC compressor.I pulled the AC relay under the hood. Using the V200, I probed the coil terminal and determined it was not being actuated when the AC was turned on. I then moved to the relay output and used the V200 to simulate the relay operation by injecting battery voltage into the output terminal. The compressor clutch immediately engaged. The problem was evident. The compressor was prevented from operating because it was so low on refrigerant that the low-pressure sensor prevented it from turning on. In this vehicle, you cannot add refrigerant without the compressor running. I used the V200 to activate the compressor, and I added R134. In a couple of minutes, I was ready to go and was able to replace the relay, which then operated on its own.The bottom line is that I very much like the V200 Pro. It is a great tool. Well made and very versatile. It made a tedious task easy and saved me much time and effort. It is a well-made tool and has earned a top spot in my toolbox. It will easily perform almost any electrical diagnostics on an automobile. It will not replace my Fluke multimeter for critical measurements, but that is not its purpose. This makes troubleshooting wiring for almost any automotive circuit. Taillights to wipers, blowers to power windows, relays to seat controls. This is now my go-to favorite! I have oscilloscopes and meters of all types, but nothing works better for me when working on automotive wiring.I plan to buy another for my son for Christmas.