Main Issues right now:
Gas Gauge started reading Empty... was working when I drove it home.
Crawl under it and at the front of the tank there is the sending unit, there should be a metal strap that clips to the nipple on the sendng unit and the other end goes to the fuel line - that is your ground... Make sure it's there and properly clean and connected to metal for conductivity...
Interior lights not working (Those back seat lights) - They also worked then stopped
Start at the fuse block and check for power/voltage coming out and trace it to the guages...
Gauge lights not working.
Start at the fuse block and trace the power/voltage to the guage light feed... Most guage light circuits have orange wire coming from the accessory feed of the fuse block...
AC Compressor
I posted some pictures of the factory style for you above...
Few Minor leaks.