Electrical problem...anyone got a diagram?

I've got a weird problem that just started on my '91. When I first start it up in the morning to go to work, or in the evening when I leave to come home, the A/C blower and the turn signals don't work. Hit a bump or go over a bad railroad crossing and Voila! They come back. Sounds like a loose connection or bad ground I know. But where? I'd like to see a diagram to see what connections or grounds the two very different circuits share. I'm hoping that it'll at least narrow down where to look. I'm sucks trying to purposely find a pothole.

Nothing else appears to be affected by this. I don't have a whole lot of hair left so I'm asking for your help so I can at least keep enough to grow a nice comb-over when the time comes

Ignition switch huh? I'd have never figured that, but I suppose anything's possible. I know for fact that the switch is original. The car has been in our family since new. We bought it and my wife's new '06 at the same dealership

I never thought to jiggle the key. I had it in my head that it was probably a bad ground or something loose under the dash. The car's coming off the road next week for a complete front end rebuild so I'll take a look at the ignition switch too while it's down.

Thanks for the help.