Hi
I have the remains of a DC record player, I have never seen a dc motor (other than the small low voltage types) in a record player before, this is a big beast! mechanically governed , its fitted to a Garrard autochanger, it looks as if hum may have been a problem judging by the way the power cables were wrapped around each other plus the power cables are screened.
I dont know how it was originally wired someone had chopped the deck wiring nicked various parts inc the valves etc before I got it
I might be tempted to run the motor up and see how well it runs!
Rich.