Does anybody know the polarity of the wiring to the ignition coils? Each coil has a common black/white wire and the second wire is a different colour on each coil. Im fitting a translogic is4 quickshifter which i have been sent a diagram for from translogic. The diagram states the grey wire must be connected to the +12v wires on the coil. Anybody know if the +12v is the common black/white wire or the other coloured wires? Cheers.