Just wanted to see what it would do....as an experiment. No big deal if you don't wanna run one.
My question is what kind of voltage does the 12v coil put out without the regulator at max rpms? Perhaps you just need a rectifier. That tt wants high voltage at the input, like 20-40v straight off the stator unloaded. if you're just giving it 12v, it can't do it's job and there is some voltage drop. (edited)