A: BUT leaving the key on and motor not running with an HEI system will not only drain the battery, it will often take the ignition module with it once the battery drops to @8volts. From: adh@xxxxxxxxxxxxxxxxx (Sandwich Maker) To: mail@xxxxxxxxxxxx Subject: Re: Spirit engine problem fixed....now the %&*^$ SX/4 gm hei is an exception to this. if it doesn't see a trigger within a certain window it opens the coil ckt. you can leave the key on as long as you like without burning the coil up. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought