xv250 headlight problem

My 1989 Route66 has suddenly developed an intermittent headlight
problem. Sometimes the headlight comes on with the key, but goes off
when the engine is started. Other times, all is fine until you get
where you're going, and shut down. Naturally, whenever I bring it
inside to look at it, everything is fine and all works as normal.
Running lights are working perfectly, as are the turn signals and
tail/brake lights.

I'd hate to rip open the headlight bucket again w/o having a clue what
I'm looking for. Anyone have a similar problem or have some
troubleshooting suggestions?

many thanks,
bc

 >
 >
 >My 1989 Route66 has suddenly developed an intermittent headlight
 >problem. Sometimes the headlight comes on with the key, but goes off
 >when the engine is started. Other times, all is fine until you get
 >where you're going, and shut down. Naturally, whenever I bring it
 >inside to look at it, everything is fine and all works as normal.
 >Running lights are working perfectly, as are the turn signals and
 >tail/brake lights.
 >
 >I'd hate to rip open the headlight bucket again w/o having a clue what
 >I'm looking for. Anyone have a similar problem or have some
 >troubleshooting suggestions?
 >
 >many thanks,
 >bc
 >
look at every connection and every inch of wire. you have an
intermmittent fault and only examination will find it.<!-- ~MESSAGE_AFTER~ -->