Help!! Headlights have mind of their own!

[Bob Mullins <BMullins@adamhs.co.montgomery.oh.us>]

I am truly enjoying the "B" that I got two weeks ago....learning about its 
strange habits.

For instance, last night my step-son took the 73B out for a few minutes. As he 
was leaving the drive way I noticed that the Right headlight was not working. 
When he got back the Left headlight was not!!

It seems that either the right or the left, want to work. VERY SELDOM do both 
work...

Any thoughts on what might be wrong and ways to correct would be appreciated.

Thanks..

Bob Mullins
Dayton, OH. USA