John, My '70 Charger does the same thing. It's the headlamp relay under the dash, attached to the lower dash with a single phillips screw on my car, possibly similar or maybe plugged into the fuse box on yours. ( I'll check my '70 300 this weekend ) Anyway, the buzz continued even after I replaced several good used relays with an oem, nos piece. The headlamp motor was nos also. I've been told that the contacts inside the motor may be out of adjustment causing the relay to think that the lamp doors are still open and hence, not shutting off the current ( because it wants to close the headlamp doors ). This causing the contact points inside to buzz. I'd disconnect it until you figure it out rather than risk burning out the relay. If you figure it out please let me know. Mike Laiserin Phoenix, Az ************************************** See what's new at http://www.aol.com [Non-text portions of this message have been removed] 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 For archives go to http://www.forwardlook.net/300-archive/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> 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/