draw on battery

[65truckowner]

I have a draw on my battery on my 65 c10. When I unhook the alternator it goes away. So I thought something in alternator is bad and took it to repair shop. He said a couple of things were bad and replaced them. Then it did not charge. So I took it back today and he made it a one wire. I still have a slight draw on the battery until I unhook the alternator wire then no draw What am I missing. I have the voltage regulator unhooked as well. The only thing hot at the new fuse block is the brake light fuse with the key off.