Battery draining fast

Years ago cousin Jack bought a 72 Camaro from a used car lot. No warranty.
A few days later when stink and smoke began pouring from the dash he thought he could make it back to the drive way. It stopped running and coasted to a stop 3 doors from home. The neighbors garden hose wouldn't reach it. It burned to the ground. Jack claimed he pizzed on it and that didn't help. LOL
Why did I share that story ? I read the possibility of repeat in your previous post.
You're dealing with a 50 year old wiring harness that has already been buggered up.
Use the factory diagram to put the wiring back in proper condition. While testing you should be prepared to pull a battery cable in a heartbeat. You can't do that with the hood down.