Gary, The voltage regulator may be faulty, sort of going into "search mode" whenever the load changes. You can pop the cover and use a little sandpaper (NOT emery cloth) to carefully clean the contacts, which are spring-loaded closed. The book also mentions that erratic operation can mean the regultaor mechanism's air gap and contact gap adjustments may be off, but if the thing hasn't been messed with, that's unlikely to be the case. One thing that aggravates the situation is that the needle movements on these ammeters aren't damped much, if at all, so the needle movement is quite rapid in response to changes in current. Park Waldrop C cpe - Atlanta ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Autos. Everything you need to know about buying or selling a car. FREE Quotes, 360° Tours, Research, Blue Book, Compare Vehicles, Buy Used http://us.click.yahoo.com/kEZsdA/bwnGAA/YiGOAA/8LmulB/TM --------------------------------------------------------------------~-> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/