Alternator question

Thanks guys, I'm at work, so I will answer as much as I can.
Bear with me here. The alternator is approx 3 yrs old. Bought from Canadian Tire, I can't find receipt to verify 100% what application I gave them.
I know that it was a direct bolt on, I did no mods to it.
Del, yes I remember the "burnout" from 2012...like it was yesterday lol.
I replaced the VR last year(black case upgraded guts) see earlier pic, or 2 years ago.
A quick rundown of how I got to this point. Driving home from Moparfest, doing approx 65 Mph, all of a sudden no power at all, basically car shut off. Quick 3 lane change, pull over. I wiggle this n that, turns over but no start. After 1/2 hr of trying a couple things, it fires up! Starts but VOLTMETER(Mad amp bypass done) is reading approx 11.5 volts??
Get back on highway.....65 MPH. Keeping an eye on all the gauges. Volt is gradually creeping up to 15 Volts. Took about 10 minutes to get to 15.
Got about 20 minutes of driving, then no power again.(I'm getting good at 3 lane changes by this point).
This time no start....2 1/2 hours on side of the road trying(Im a stubborn prick).
Towed home.
Next morning I wake up, swap ECU. Starts right up.
Pull around to back yard to see if I can figger it out.
Wont start again. I tried "tap test" with key on everything hooked up except the electronic dist plug, no spark.
I threw a cover on it walked away and went fishing instead....more fun pouring catching Walleye and Bass lol.
ALL SUGGESTIONS WELCOME lol
67 Barracuda, MP elec ignition, Mad bypass, VR is old style with electronic guts( I believe). Alternator is single field old style( I believe)
Thanks again guys I plan on tackling this Monday and Tuesday, so any tests/results I can do I will.
Thanks!
Am I missing something? It looks like you have the original alternator set-up (excepting solid state VR). The one spade connector at bottom, near mounting, is hot and leads to VR, while the other brush terminal is grounded. It looks like you may have it insulated. The insulating washer under the screw head belongs under the other terminal. Just be sure that this terminal is grounded.