[V8] amplifier ground

[NIck Miller]

Hmm, one of the fella's at crutchfield told me not to actually run it to the
neg. battery cable.  I mentioned it was a whole 2 ft at most away, and he
still didn't recommend it, so I'm not sure why.

That's what I was figuring would be the best way in the first place, or at
the least, connect it to where the negative battery cable runs to, the
ground bolt under the rear passenger side.

Hmm.  Guess, I'll flip a coin then.