Steve,

I was working on the tail lamps of an 84 GL today.  The rear fog lamp socket
is built into your tail lamp, but does not have the contact for power to the
bulb.  On top of this, the bulb hole in the lens portion of the light is too
small to fit in the large 32 cp bulb and there is not any reflective
material in the lens area.

You could easily cut the hole a little bigger to allow the bulb to fit in.
The larger hole might allow you to install some tin foil into the back of
the lens area for reflective purposes.

The answer to getting power to the bulb contact  is to use a single filament
replacement pig tail.  I found some very nice ones at a NAPA store that had
heavy wire and a good spring.  You just drill a small hole in the back of
the bulb socket (centered) and feed the pig tail wire through towards the
front of the bus.  Next, you install the bulb.  I hope this makes sense to
you.  Print out these directions and take them out to the tail lamp.

I don't know the best way to get power back to the pig tail.  You could
splice it into the tail lamp circuit and have fog lamps all the time, or you
could run a wire back from a switch.

Walt Spak
Pittsburgh,  Pa.
wnsopc3@3rdm.net