I noticed an interesting feature of my 1992 900s tonight: the random and
unbidden operation of the dome light. It seems to be turning itself on and off
while I drive, seemingly at random. The switch is, as usual, in positing "1"
(i.e. on when door opens). Any thoughts as to where I should look in tracking
this down? Could it be corrosion in the switch itself, or should I be looking
elsewhere?

Thanks,
John