Impatience got the better of me.... had acquick try with a new fuse. It works unless I put the faster stage of fan on when the fuse goes. So dash off tonight.... I am assuming the fan switch operates a relay for the fan so the 2nd speed should not be more load. But being a Morgan that logic may not hold!
Exactly what kept happening to me. Part of the problem, I am told, is that the circuit for the fan is backwards in as much as the fan is constantly live and the control for fan speed etc is on the earth (negative side) of the circuit. If the fan is working at high speed and you turn off the ignition you will see the indicator lights fade over a short span of time. This is because the fan motor, still spinning, works like a generator
You will find a burnt out track on the board, which can be bypassed by a length of wire, but it does not solve the base problem. Poor design!! Also, in my case, the board later burnt out again further along the circuit.
Probably due to individual variables it is OK in 99 out of 100 cars however in my experience it was a problem until Borghi replaced the whole system with wire and relays.
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