if you connected non-derailing yellow and green wires to the short isolated track spurs then two diodes one on each wire.@Bryant Dunivan 111417 posted:
If I remember the instruction Dennis Z. gave me, one wire has a diode and the other a resistor. Speaking of the yellow and green.
The only diagram with diodes I have seen are the instructions for the DZ-1000. The diodes were to stop the switch LEDs from flickering. Is there a diagram on this protection circuit somewhere? Thanks.