Thanks for helping me out folks.

I installed the outlet and I'm getting a green light from the outlet
tester Swingman suggested that I get, so life is good. For the time
being, the switch for the garbage disposal will turn a lamp on and off.
: )

Splicing together three guage 12 ground wires under pitiful conditions
seemed to be the hardest part. I think it was Mike M. who said last
year that one can do it even if the wires are not straight. Gosh, I
can't. But I did end up with a really nice-lookin' splice--and it was a
good thing I did when I did, because wire was getting scarce : )

The rest of the garbage disposal install should be like a piece-of-cake,
or something else if you don't like cake.

Bill