Hi, I was looking into the dis equus tach, for my 95 2.2 I was wondering, does it work well? Lots of stuff said about it being 1/2 rpm etc. I was gonna use the inductive clamp, but is it possible to actually use the tach connector under the underhood fuse panel? I put a test light to it, and it has ground when engine is off, when you put the key to on, it goes blank, then it grounds again. When the car is running, there is neither pos or neg at the connector? Help?