Quote:

5 volts when there is no metal in front of the sensor head and 0 volts when the tooth passes in front of the head.



That's kind of confusing... does the 0 volt or the 5 volt signal trigger the coil to fire? there is always metal in front of the sensor, except when each notch or "window" passes, which is what fires the coil. (the design is so that a "hole" in the ring passes the sensor to correspond with each piston's timing mark)

**Photobucket sucks**