This won't harm the alternator. John Ryall On Tue, 11 Apr 2006 07:35:49 -0500 "Kinzelman, Andy" <akinzelm at greatnortherncorp.com> writes: > Guys, > I need to run an engine out of the car. Will the alternator be > damaged if the engine is running with no wiring attached to the > alternator? > Thanks, > Andy K.