[Vwdiesel] No tail lights...

[Joe]

OK, I think I've lost my mind.  My 82 n/a has no tail lights/parking
lights/instrument lights/license plate lights.  (it DOES have a good dome
light, which also works via twisting the headlight switch)  I've pulled the
headlight switch out of the dash so I can meter the contacts.  I've pulled
all the bulbs except the dash.  Had to destroy the license plate lights due
to rust.  (oh well)  I've pulled the 4A instrument light fuse.  The grey/red
source wire on the headlight switch reads 12v.  If I pull the headlight
switch out to the parking light setting, I read 12v on both output grey
wires from the switch.  I can then go to any socket and read 12v.  But no
matter which single bulb I put in, no tail lights.  Now here's what's weird.

1. if I put a bulb in, the 12v source wire on the switch reads zero volts.
2. no matter which 15A fuse I pull, the switch ALWAYS has power.
(westmoreland fuse box)
3. the 30A radiator fan fuse looks like it's been getting hot (slight
melting) but I haven't tried (hard) to pull it.  One problem at a time,
right?

I can provide more info... Ask away.  I'm stumped.  Oh, can anyone point me
to a diagram of a westmoreland fuse box? I have only a Chilton manual and
the famous "Idiot Book".

Joe