I really enjoy this thread.
I'm glad you enjoy it, I know I'm not wasting my time updating it!
If you unplug your multi-wire connector from the alternator and leave it overnight, if the battery suddenly starts not being dead it is probably your alternator again. Also, if your lights are rhythmically flickering or surging at idle then your alternator may be partially working but not enough to get ahead of your trucks electrical demands.
Ford 3G alternators are a big step up over what they replaced, but not without their own problems. Also, IIRC you can get an even more powerful alternator than the F-150 would have came with out of a Taurus. It should be direct swap but it has been too long to remember.
Thanks for tip. I'm gonna start investigating it tomorrow. Someone else told me there may be an issue with the exciter power wire too. The alternator shop that did the rebuild is pretty reputable, so I'd be surprised if there was something wrong with it again. I have a 95A alternator, there was a 130A too, but I'm not really running any aftermarket accessories so I couldn't justify paying extra for one.
And yeah, the 3G doesn't have that problem where it'll burn down your house if you park the car in the garage that plagues the 2G, so it's got that going for it 😉
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