Does anyone know where I could get a Ranco a10 1463 stat from.its very old and is off an old Jensen interceptor,there is an arm which is worked from a vacuum actuator that gets its signal from the selector switch in the cab.the sensor from the stat goes into the evaporator I am guessing the stat is a fixed set point.looked at Ranco stats there is some that operate within temp range I want but I would like one with the on/off lever on side.does anyone know of anything about these. Thanks