1987 Oldsmobile Delta 88 no power from the ignition coils

1987 Oldsmobile Delta 88 3.8l eng. Code3 mileage: 78,000. The timing belt broke and bent a couple of valves. I replaced the timing set, pulled the heads and replaced all the valves, seals, and push rods. After re-assembly, I find I have no power from the ignition coils (no spark). I replaced and carefully adjusted the crank sensor but no difference. I have been tracing the wiring with a test light and it looks as though it's pointing towards the ignition module (not cheap!) But since I didn't go near the module during the repair, I hesitate to replace it. Is there a way to test the module directly (C3I system - separate crank and cam sensors)? Or is there a way to see if the module is getting signal from the sensors (cam and crank)? I have a lot of experience with pre-computer controlled engines but this has me completely lost. FYI, the cam sensor magnet is in place on the cam sprocket, all cylinders test to specs on compression and the ECM gives a code 12 (ECM functional) so I know I'm close.