anyone use a D.U.I. tri power ignition?

The same wire that fed your old coil will feed the new one (+). If the instructions say no ballast is needed then just put a jumper between the two ballast resistor connectors. One of the connections on the HEI module will go to the other side of the coil (-) and since you are eliminating the ballast just run a jumper from the (+) side of the coil to the other HEI connection. Yu don't want the coil connected to the alternator or yuo won't be able to shut the car off.

Why the coil is marked BAT and ALT makes no sense. You will need to call them to get that squared away.