I am working on a 54 Morgan. The temp gauge doesn't function. I believe the car originally may have had a capillary tube type of sending unit and gauge. This one now has an electric one. I tried testing the sending unit using hot water. Not sure where to attach the lead for the wire that goes to the gauge. Most sending units I have seen have a button that is insulated from the body of the unit. This one doesn't. When I touch the wire to the unit, it registers 'H'. Otherwise it registers "C". I have been told these sending units are no longer available.
Ideas as to a fix?
