Then I got a little project for you Dale.
Want you to take your voltmeter, hook it up to the ignition side of the coil, from where the voltage goes to the coil. That will be the positive lead, a good ground for the other lead, battery, a good bolt, etc..
Mount it in the car, so you may have to make "extensions" for the leads. If your voltmeter has a highest reading, great, otherwise, have your passenger keep an eye on the voltage.
Now on the 20VDC scale go for a road test. Have someone watch the voltage reading. We are looking for a "spike" or "twitching" of the voltmeter needle. I am just wondering if you aren't getting a voltage spike that is eating the condensor up, possible a failure internal in the alternator, daytime first thing to go would be the ignition system. Or if you have a motor running(fan motor, etc.) you might hear its speed change. At night you would see lights "flare" up.
I know this is a far reach, but the symptoms and components you've replaced also are a stretch, so.......?