I had to try this one and it turned out fine. My alternators are a bit different than yours but I simply traced the wires from the coils to the circuit board and soldered three wires on to them and then wired up the leds as stated.

Works fine but I noticed that two of the leds do not light up with the others. I suspected faulty leds, but they light up individualy from the wires from the alternator.

One thing I did notice was one of the leds seemed to light up when the wind speed was very fast, but it only lit up for a second and the other one was still out.

Curious but still a working wind generator from spare parts.

The next alteration will be to use some clear rulers and different coloured leds.

At Dick Smith Electronics here in Oz, they have multi-coloured leds as in red/green and red/blue and also three coloured ones that have three legs.

Might be an interesting effect.

Another idea might be a simple railway crossing circuit aka.. flashing alternating leds or simply flashing leds of different colours.

Question.... How hamy leds will these type of gens be able to support??

Great project for a rainy ( windy?? ) day!!

If I can build it, anyone can ;)