[Greggshere]

Thanks gentlemen, yes I did make a diagram and took photos before I took it out. The one black wire was on pin 8 of the rectifier tube and the other black wire was soldered to a chassis ground at the tube base on the next tube over. Based on what Radioroslyn said it might indicate that black wires are probably not the primary since the one was on pin 8. This radio had been gone into by someone previously and I changed the caps and resistors based on the schematic and assumed the actual wiring was most likely correct. That's what I get for assuming. I'll try changing polarity just in case on the black wires and check all the rest again and see what I get.