Some corrections:

>The socket is the electrical part.  I got the socket out of a VW in a
>wrecking yard.  If I remember correctly, the rear fog light bulb is a
>smaller (size-wise) bulb, but it is brighter than the regular tail light
>because of the reflector in the lense.

For the rear fog light you have to use same bulb as mounted in the brake
section. Color of the wire is red-yellow, if I remember correctly.

>I ran a separate wire because I
>was pressed for time, so I'm not sure that a wire exists in the
>harness.  If there is a "factory" wire in the harness,

There is a separate wire in the harness.

>it may be tied
>with the headlight wires because, in Europe, the factory fog lamps are
>tied to the dipped, or low, beams.  They turn off when the brights are
>activated.  Hopefully, this helps.
The wire is not tied to the bright. I guess, you mixed it up with the
front fog lights. It WAS the law, that the front fog lights have to be
deactivated automaticly while the high beams are switched on. But this
isn't true anymore.

Helmut
'80 Vanagaudi