Well, I put the cap in. (1000uf, 35v) I bought 2, cause I figured I'd get it wrong at least once. The first time I hooked + to AB, and - to AG. Cap started to get hot, unplug NOW.
Went for a walk, realized (duh) AB is - (for some reason I just can't get that straight in my mind). Put in a new cap, it's not overheating though there is still some buzz. Not as much, but some. I can live with it.
And thus the intercom chapter is closed.
Stay tuned for the next project: MOH.
THANKS EVERYONE.
- Matt