I just finished painting my 1982 Black and after I finished the clear coat suddenly I've lost all power, the battery is new have new terminal contact points the multimeter says the starter and battery are still juiced but there are no accessory lights, nothin, the car started up fine when I put it into the paint chamber but for some reason 4 days later the new battery isn't getting any power anywhere, the ground looks fine, all the fuses are fine, I'm in a pickle here and I'm hopin to get some input any ideas?

 

The fuses are fine but did you check the fuseable links under the hood?

 

corrosion at the terminals? I had that problem often until I got a dry cell.