Innova 3410 Test Light/Circuit Tester

If your looking for a good no nonsense reliable tester this fits the bill. Has a good cord length, fine tip to probe the smallest terminal or fuse blade. I take it everywhere with me. Has came in handy many times.

I liked its simple design and potential ease of repair. The negative lead cable is soft, the clamp seems solid. The positive pin with the handle seems robust. The handle seems friendly to holding it, however, it seems to be made of brittle plastic. So unless you step or drop a sledge hammer on it, nothing in it I don't like or won't be able to repair. This means I can keep it, and it'll work for a long time. Hence, the rating.Those more technically inclined, read on to learn about more detail.First thing I noticed, the logic seemed wrong to me. Because its a car tester, the only voltage I'll be looking for in a modern car, is a 'positive' and I never should experience a 'negative'. If I ring a circuit and I found 'positive', its good, hence - show me 'green'. And if I reversed the polarity of tester leads, that's an error, show me 'red'.In the unit I received, the logic was opposite of this. So I thought, is it easy to open the case and to correct this? Yes, extremely so. The case is held together by one screw and a wedge. I had to machine about ~0.5 mm off the wedge to make it slide in and out smoothly.The internal circuit consists of two parallel branches with a red or green LED and a drop resistor in each. Drop resistor values are 150 and 220 Ohms, which allow the LED circuitry to function between ~2.2 VDC and 24 VDC and limit the current to 10 mA @14.4 V; 20 mA @24 V, which seems safe enough current for the LEDs.Other than that, nothing else to add. So I reversed the polarity to the correct logic - 'green' for locating the active rail; 'red' for reverse polarity and I'm happy now.One more thing - before closing the case, I put baking paper in the handle, in a pre-cut shape that fits the inside of the handle. Now, because the handle was made of transparent plastic, the paper makes LED light diffuse and all of the handle glows when the LEDs are on. Cool!!Anyways, its a good product whether you use it out of the box or upgrade it. Its easy to work with and that's the main thing. Highly recommend it!.

To start with don't buy this test light expecting it to be the only test light you'll ever need. While this light is very handy for quickly confirming the presence of power and/or ground with no need to switch your lead around like on conventional test lights, it also draws essentially nothing current wise. So as long as 1 strand in a wire has continuity, this light will say power or ground is present, even though a wire may not be able to carry enough current to actually run a component (something a traditional style tester can do since the incandescent bulb does create a known draw).That said for quickly checking a fuse box it's hard to beat this test light since you can even plug it straight into a 12V outlet to verify interior fuses quickly. For everything else, as long as you keep it's limitations in mind, it's an excellent addition to your diagnostic arsenal. After buying mine, this tester impressed one of my coworkers enough to purchase one for himself since it's fairly inexpensive compared to some of the testers out on the market from big name brands.

My go to tester now.

Súper practico, buen producto y su llegada muy rápida!