It's probably me erasing your EEPROMS. :) I live next door to a garage where vehicles for the city are repaired. It's deserted during the day, but at night there are front-end loaders and garbage trucks abcking up all over the place. All night long during the week I hear "Beep Beep Beep"... Drives me nuts! More than once I have had an urge to sneak in there on a weekend and rip the speaker wires from those alarms, or maybe just stuff a sock in the horn... On Wed, 13 Oct 1999, Gary Schroeder wrote: > I am using a pic12ce518 in back-up alarms that go on utility vehicles. > Some vehicles cause the on board EEPROM to be erased. What might be the > cause of and solution to this problem? > Thanks in advance. > Gary >