Grumpy is the MAN!!!

The banded end connects to the power supply wire. The "right" one banded end connects to the lug with both the parallel wound wires. The "left" one banded end connects to the center lug where the power stroke winding ends.

rollergames_flipper_wiring_diagram.jpg

Just trying to help you here. You should probably think of this differently.

The entire solenoid circuit is "hot". It's grounded by the drive transistor (TIP102) on the power board. In normal circumstances there is +50V from where power is distributed from the board (voltage connection) to where power is returned to the board (drive connection). These may or may not originate and return to the same or different board.

One wire connected to a solenoid lug is the voltage connection (I refer to it as the power wire). This is where the voltage originates. In WPC-89 it's usually J107. It is common (wired in parallel = daisy chained) for a group of 8 solenoids depending on their intended usage pattern. The other wire connected to the other solenoid lug is the drive connection (I refer to it as the drive wire). This is the end of the circuit that is grounded by the drive transistor (shown in your Fun House table as "Connections"). When grounded the (conventional) current flows from the high voltage origin (voltage connection) to the low voltage destination (drive connection).

The Williams manuals have errors in them and are sometimes incomplete. The Fun House table you show does not list the voltage connections. Some of the chronologically following manuals INCORRECTLY reverses the voltage and drive connections. There's a period where some of the manuals are correct (such as Indiana Jones) and then by the time it reaches WPC-S manuals they appear to be correct.