Walther's 130' turntable.
A few months back, I received the two new circuit boards from Walthers to fix the error code 0 that came up when 'first' powering up the turntable.
The install can be done with the turntable mounted on your layout.
I taped the line to the outside sensor so it wouldn't move.
Four screws removes the circuit board and cover from the bottom of the table.
Just had to cut the two wires and used the provided electrical connectors.
I viewed the connectors from the bottom to insure the wires were all the way in the holes before pressing the button on top that secures the wires.
After turning on the power, a D0 shows up for selecting which size turntable you have. D4 was inputted for the 130' per your original instruction sheet.
Obviously, all the new track locations, then, has to be inputted into the controller.
Very simple process and took only about 15 minutes.