Battery draining overnight

Mattax said

Sorry, but when you have a problem and only post a portion of the information its very frustrating.
What year, model, engine and options were on the car to begin with?
What modifications, new electric items (fans, amplifier, EFI or whatever) have been done?

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This car is a clustertruck of everything. When I got it, it was just a half rolling shell. It’s a 1970 318 Duster with a 71 wiring harness with a carbureted 440 and a single wire alternator and electronic distributor. It has electric fans but they’re on a relay so they draw straight from the battery. Currently it has no electric devices inside other than the headlight and wiper switches. I plan on adding a nice stereo system later on. The headlights are not on a relay yet