I am in the process of converting a '99 into a SM.
I reinstalled the dash and everything works great except for the fan for the heater. I can't seem to figure out why it is not working and to make matters worse, the project has taken enough time that my forgetful mind can't remember why I shortened one of the bundle of wires off the loom), which has the same colored wires in it that plug into the back of the fan control unit.
Does anyone have a wiring schematic that you could send me electronically or tell me where to get one?
-------------------- '99 Miata (1.8l) purchased and dedicated to SM in '09