Hi Craig,
Found the board, but that doesnt tell me much.
If you look at the pictures closely, you can see wich pins in the connector are used.
Only the pumpwires (red) should be connected to the correct pin, the rest of the pins are not critical of course.
Take in mind that i used two red wires for the pump switch, as there flows quite some current through those wires.
You should use switches that return to open when you take your finger of.
Just push the buttons try and see what happens, the nose of the selector should be able to find all positions.
The thick red wire at the bottom of the "board" was connected to the positive pole of the battery, the negative pole can be connected to the housing of the gearbox.
Hope this helps.