Whew!  I'm dizzy from Bentley and Vanagons and defogger switches!

Bentley shows my '81 with only three wires and one bulb in the
switch.  However, actual inspection showes the same setup as
later models--4 wires.  ETKA shows only one switch for all years.

I was certain the white graphic on my '81 was just printed on.
When I took the switch apart I found two bulbs.

Got my '87 back and turned on the headlights--and the graphic
lit up on the switch, controled by the dimmer.  The bulb for
showing the fogger is "on" is dead.  Maybe on the '81 the
bulb for the graphic is dead.

I think I've gotten deeper into this than I wanted!

Richard