The difference from 1967 to 1968 was that the switch keeps the front parking
lamps illuminated in the headlamp position in 1968 models.
In '67s, the front parking lamps come on only in the parking-lamp position and
are doused when the full headlamps are turned on.
It is easy enough to modify either version (or the connector for the wiring
harness that attaches to it) to work either way... in fact, I keep meaning to
change mine so those beautiful front parking lamps stay on with the headlamps.
Chris in LA
-------Original Message-------
From: Tim Klein <tim@xxxxxxxxxxxxxxxxxxx>
-- They were an Imperial-only part, and only for '67-68.
(Actually, I think the part numbers may be different
for '67 and '68, but they appear to be identical.)