(Well, I'm going to stop this thread soon...) Yes, but you described a 3 pin sensor with *two* signal pins. I have a 3 pin sensor with : One pin to GND One pin (via a inductor) to power One pin to the IC Jan-Erik. Guillermo Rodriguez Garcia wrote: > Then it is as I described at the beginning, one led and > *TWO* sensors (mounted in a single receiver) per wheel. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.