Dana:

If you don't have flickering at the coil 12V connection, the points aren't working or the switching unit is shot.

Check to make sure the points go to ground when closed, and that the condenser is disconnected -- it can sometimes fail and cause the point circuit to "bounce" so badly the transistor unit doesn't work.

If any of the voltages specified for checking the switchbox are out of spec, it's shot.

did you try hooking up the points "simple" and testing?

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!