Graynomad:
He he, do I get a prize
Rob
Sorry, no. 
Good job, though!
The remaining mystery to me is why they went to such trouble to hide what they are doing. The dummy looks EXACTLY like the real magnet. It's like they had a big batch of defective ceramic magnets to use up. The rotor that operates the HE for wind speed does have two functional magnets and looks identical to the Wind direction rotor. Curiouser and curiouser.
I'm still left with the problem of reprograming the stock chip. Anyone with any suggestions about that please step in.