Fan

The circulating fan switch has two wires. One goes the the large dropping resistor on the rt side of the heater/AC box near the passenger's left knee, then to the fan motor. The other goes directly to the fan. One or the other of the wires is shorted to ground. It doesn't appear possible, but the fan motor complete with the plastic impellers CAN be removed without pulling the dash. 'Taint easy but it can be done, even by guys with big hands.
As for the wiper motor, nothing new since 1974; its still a Jaguar unit & is rebuildable. I'd call all the vendors & check if they have a good used one in stock.

put fuse back in fan worked ok and fuse did not pop but lo and behold distinct smell and faint wisps of smoke near fuse box wire got hot. So pulled fuse out. Should I pull the fan motor? I have checked the switch and looked at all the connections into the fan motor they looked ok. How can I get it out without removing dash?

Now I am blowing fuse conected with the head lights or hdlight motor. Plus if I try to replace the fuse it sparks is there a electrical connection between the fan blower and headlights? Any advice on where to look.

I Just sold a used WW motor assy to Jerry at PI it's off a 74 with a rh park. It was in excellent cond. Good luck...