[Bricklin] No instrument lights

[Scott Isensee]

The instrument panel lights on my Bricklin are not coming on. The fuse is OK
and I have rotated the headlight switch rheostat through its full range of
positions. It seems unlikely that the problem is the bulbs because they
shouldn't have all burned out at once.

What else should I check? I am thinking the most likely problem is a bad
rheostat in the headlight switch. I tried to pull the switch out so I can get
at the connections, but it isn't obvious to me how to get the knob off the
switch. I don't see a set screw. It doesn't seem to pull off (at least with as
hard as I was comfortable pulling without taking a chance on damaging the
switch). Some of my other cars have a button on the headlight switch that
releases the knob and shaft, but I can't find one on the Bricklin switch. Can
anyone tell me how to get he knob off? Maybe the lower section of the dash
drops down?

In case I need a new switch, can anyone tell me what it interchanges with?

Scott