I have a 2002 classic Harley. When I'm driving I lose all electrical power. I pull over to the side of the road wait two or three minutes and it fires back up. Drive four or five more miles and it does it again. Pull over to the side of the road wait three or four minutes and it fires.

When you say all electrical power are you meaning that nothing is coming on even sub systems like headlights and blinkers?

'02 Sportster Intermittent Speedo, Odometer, and loss of electrical power - Harley Davidson Forums