Alternator problem & ?

[Donald Lamond]

I have just read your response to Dennis about grounds. A couple of
questions.
1.  I grind or wire brush down to the bare metal when I am redoing a
ground wire.  What is the best method of sealing this connection?
The two that I have used are about three applications of spray paint or,
my preference, two coats of the liquid electrical tape.

2.  What do you mean by , "...zero is getting lifted a couple of
volts."  The answer is probably basic electronics which I lack, but I
would like to get some understanding of this.

Thanks In Advance,
Donald
84 4Ks