fog light / tail lights flicker

[Y-JobFan]

I have notice that the fog lights on my 90 will flicker off and on when driving, I was traveling to a show yesterday with the fog lights and running lights on (not headlights) and when I got to the show a person came up to me that had followed me and said my tail lights are flickering the same as the fog lights.  Any thoughts?  Headlight switch?  

[Ronnie]

Headlight switch would be my first guess. Or possibly the connector on the back of it. The connectors have been known to melt, probably due to overheating cause by a bad connection,  so you need to check that right away to rule it out as the problem.