Alfa Romeo Repair: Alfa Romeo 1979 Spider Alternator repair, small screws, nut bolt

Question
Last week the red battery light was randomly going on and off when the car was running.  Then the battery went "dead" according to AAA, who gladly sold me a new battery.  The light continued flickering, but after three or four days the new battery went dead.

I am trying to remove the alternator to have it tested (easier than moving the car) but I am having trouble with one of the nuts that I believe fastens it to the engine.  I tried liquid wrench but still can't budge it.  Also, I am not sure if it is even the right nut/bolt for removing the alternator.  I don't have a service manual nor a diagram.

1.  Where exactly are the bolts/nuts to remove the alternator?  What is the best way to get them off--there is little room to work with?

2.  Should I also test the voltage regulator?

3.  Is there any thing else I should explore that would have killed the battery?

Thanks for your help.


Answer
The bolts are at the top and bottom--only two.  It is necessary to have a complete metric tool set to comfortably work on an Alfa.

When the battery light comes on it means the alternator is not charging. In my experience this usually means that the brushes are worn or their contacts are corroded.  The brushes are in a package held on by two small screws at the back of the alternator.  Disconnect the battery before removing. Replace with new brushes but first clean the copper tangs exposed when the brush package is removed.