I'll agree with vstech, you're on your way. The transmission problem is probably vac related, but you need to start the trouble shooting process.
The door locks work on a separate vacuum system, an electrical motor in the trunk.
A/C is a normal failure, compressor, most likely.
Rear defrost, is any of it working? Only the top portion of mine works. May be fuse related.
Dash lights are probably a rheostat problem, twist the dial back and forth, it may light up.
I also am too far away, do some searches for your problems, and ask away.

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83 SD

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