dui tri power questions

72 is a bad year, LOL, because the breakerless system was just coming out, so the diagram is an "afterthought" in that manual

This should be your original stuff. What is NOT show here is the bypass circuit which is BROWN going to the coil+ side of the ballast that is lower right on the ballast

http://board.moparts.org/ubbthreads/upload2/3129021-5pin.jpg

Also not shown in that diagram is branches that come off to feed the alternator / regulator. The point is this:

WHAT YOU CAN ELIMINATE is

the two distributor pickup wires

and the wire going from the lower left of the ballast to the ECU

Take EVERYTHING else and hook it all together. Then run the original coil+ wire off to your new distributor power wire / connection

That should be all you need.