positions are as follows
1.full humbucker,
2.split humbucker,
3.full humbucker with rear coli running through capacitor (rolls off higs and adds more bass),
4.full humbucker wired with diodes (causes signal to clip, sounding similar to a tube amp breaking up),
5.full humbucker with diodes and capacitor on rear coil (clipping distortion, rolled off highs, boosted lows)