Ignition Coil Wiring
 

On an externally mounted stock coil, the coil has a 4 pin connector attached to it.
My Haynes manual labels these A, B, C, and D, but it does not identify where each letter goes. It appears that A and B both have a black wire with yellow stripes. C and D both have a blue wire with red stripes.

Can someone identify these?

Thank-you!