Ok, I've been thinking this through for a while and correct me if im wrong, I don't think that different wood actually affects the tone of the guitar. Think about it. In order for a wood to produce a tone, it has to vibrate. The only thing that can vibrate the wood on a guitar are strings. The strings on an electic guitar are thin and don't produce much vibration and therefore the vibrations have to be "picked up" by pickups. This then goes through circuitry and is amplified. The wood does not affect this at all. One could argue that wood is vibrated by the sound from the amplifier, but this still wouldn't affect the sound, as pickups generally only pick up elctromagnetic waves, which is why electric guitars have steel strings.
I can only think that wood is purely for asthetics. However, I don't know everything, so if I'm wrong please let me know. Also, don't just say "you're an idiot, you're wrong", give me a reason how wood affects tone. I will happily stand corrected