🔍 Innova 3420 Smart Test Light/ Circuit Tester: An Optimized Solution for Efficient Searching Review

I was able to check for blown fuses without having to pull them out one by one to visually inspect. I checked the fuses in the engine bay and under the dash and found two to be blown. The entire inspection and replacement took no more than 10 minutes. This product is a great time saver.

►After years of searching (YES, you read that right) for a worthy LED circuit tester replacement/upgrade. Innova 3420 is exactly what I wanted. It's simple, foolproof, and comes with a cigarette lighter and battery clip. This MUST be fundamental to anyone working with automotive circuits; Security, Sound and Lighting (HID/LED).

I am a qualified car mechanic and use this LED test head at least once a week! It's been years and this is my probe. Very durable, I've even come across it a few times. he seems indestructible. The only thing that bothers me is the lack of an option to change the tip, and the stars are almost nothing to lose because of it. A quick trip to the mill and it's just as spicy as the day I got it!

This tool was so easy to use. He did exactly what I needed. Most testers only have a white light that has no color like this. It has two colors. GREEN is good, RED is bad. I used it on my '79 Ford F-250 to monitor parasitic battery voltage. It worked and now my truck's battery survived. Batteries are NOT cheap. This should be in every tool box. worth $$$.

Hard to find warranty/service information for it. The light stopped working yesterday. and the fuse is fine. Bought in September and seems impossible to find a link for help. UPDATE: 7/26/18 Although in many cases it is difficult to find the right way to do the maintenance. The seller sent a replacement and arranged for the defective one to be returned. . I use this product almost every day and am very satisfied.

This test lamp has 3 colors: white, red and green. A white LED indicates that voltage is flowing through it and is useful for adding a small amount of light to the area under test. Red LED corresponds to (+), Green LED corresponds to (-). The brightness of the red LED indicates the voltage of the circuit under test. This test lamp is computer safe, a must for today's electrical systems. It has a built-in cigarette lighter plug with an internal fuse and an adapter to connect the tester directly…

In my opinion: Arrived yesterday and used a little last night. Wiring harness in hard plastic insulation is a pain. The unit is equipped with a white LED to indicate proper power supply. this LED is too bright and is annoyingly lit on the sides; especially when working in dark surroundings. In general, these LED logic probes (as they're often called) are better suited for sorting out hot/grounded/floating objects than for troubleshooting; among other things, they don't draw enough current to…