Steve,

You should contact Jim Thompson at www.oldvolkshome.com or call him at (530)
221-5342.  He likely has one or knows where to find one.

Alternately, you could use an emergency flasher switch, which will fit in
the space perfectly.  To be on the safe side, wire in a relay to keep the
high current draw away from the dash switch.

Budd Premack
86 Syncro, 73 Super
Minneapolis, MN (Land of Sky-Blue Waters)