'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
1. You've mentioned the Alternator light a couple times. With the key in the on position (not started, just in the on position), is the Alt light on? It should be.
2. Does the Alt light go out when you start the car?
3. Does your fuel gauge work at all?
4. Are the other idiot lights and dash light working?
5. Are the headlights / signal lights / tail lights / brake lights working?
6. Are the fuses in the fuse block the proper amperage?
Where I'm steering you is to find out what's not working, and go from there.
Now I'm going to ask my usual question: "Do you have a service manual for your car?" The service manual includes wiring diagrams.