yang mga flat cable na yan ay the "bus connectors" nung unang panahon, sikat sa mga mini compo yan.
the power may also come from the flat cable, you have to find out kung DC yan o AC. kung AC eh madali, kung DC you need to know ilang volts to power the motor, and probably yung mga wall wart eh pwede na. you can also make a decent power supply later on.
turntables simply need a L+ R+ and L- R- plus ground, so your aiwa tt can be salvaged to become a standalone tt.