I am going to declare a qualified success on this one. The gauge checks out O.K. on the tests I can perform without a new sending unit (the old one was too far gone to even consider a rewind) and I won't have the new unit until after a local swap meet in Oct. The gauge shows empty with current through the choke coil only and full with current through both magnets.

To rewind the choke coil, I measured out 70 feet of 40 Gauge wire on the ground in my back yard after covering the ground with canvas drop cloths to protect the insulation on the wire. I then soldered the wire to the core of the magnet spool and chucked it into a cordless drill mounted in a very simple plywood frame. I triggered the drill with one hand and let the wire slip through the fingers of my other hand. It wound up neat as a pin.

Thanks so much Neil and Denny for the help and advice on this little project. It turned out to be pretty doable and best of all I get to keep the original gauge.

Peter
55s (got one of each)