There should have been a diagram in the box that it came in. The pink wire from the dizzy goes to the "BAT" or + side of the coil. The "hot" wire from the ignition switch also goes to this terminal (Tom supplies a "Y" connector to accomplish this). The black wire from the dizzy goes to the other terminal on the coil.

Be sure to gap your plugs for the HEI and also invest in some high quality HEI ignition wire.