[304065]

Can you hear it whine? The unit contains an inverter and transformer to generate the high voltage to charge the capacitor, and just like a flash unit in a camera, you should be able to hear it whine.

By good ground, I assume you cleaned the brass terminal on the brown wire that bolts to the body sheetmetal behind the "console." The ground that comes off the metal tab on the CD box at the bottom goes to a braided wire that connects to the engine at two points- but the trans ground is pretty lousy, so if you don't have continuity between the brown wire, the console and the CD box, that could inhibit good operation.

Do you have continuity between the red terminal in the three-way plug that goes into the bottom of the CD box and the bottom fuse (#1). Also, I would check for contiunity between the black with purple lead to the the side of the distributor, and between the blue with yellow lead to terminal 15 at the coil (the coil positive).

I don't know how to measure the CD box output but my guess is that when the capacitor discharges, it's VERY high voltage and could result in a really bad hair day for both the multimeter and it's owner . . .

I would guess that it's more likely that a connection somewhere would have failed than for the CD box to go bad, but it certainly could happen.

Good luck! Wish I could help more but I have converted to MSD 6AL (with rev-limiter!)