Okay, finally found the box with the 'Beep' in it and made a diagram of the circuit board to motor connections.
The lights are just in parallel with the motor at each end, so I left them off for clarity. It's a little confusing, but not super complex. Because the motors are on opposite sides of the gears on each end, they have to rotate in opposite directions when operating. Which is why the Red Wire goes from the right hand terminal of motor M1 to the left hand terminal of motor M2, and the Black Wire is just the opposite, going from M1's left terminal to M2's right terminal.
On the PC board, above the green line, there is a solder point marked BRN that has a BLACK wire connected to it. This BLACK wire (the label shifted down when I saved the file) goes to the M1 right hand terminal with the RED wire going to M2. Between the LM380N IC chips there is a solder point labeled BLU. It has a RED wire going to the M1 left hand terminal with the BLACK wire going to M2.
On the right end of the PC board there are two solder points labeled WHT1 and WHT2. They both have BLACK wires going to the Direction Lock switch. On the left end of the PCB (not shown) are two solder points labeled ROL and WHL. ROL has a RED wire going to the pick-up rollers, WHL has a BLACK wire going to the chassis.
Hope this helps.
Len
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