Marx Electric Lighted Crossing Signal with Bell and LIONEL FASTRACK

[LIONSAM]

Hi how can I make a Marx Electric Lighted Crossing Signal with Bell to operate properly with lionel fastrack? 

[lionelsoni]

Isolate one of the outside rails near the crossing, to make a "control" rail.  Connect the signal between the control rail and the center rail.  (You can also connect it instead between the control rail and a fixed accessory supply which shares a common return to the outside rails generally with the track transformer.)

[LIONSAM]

Thank you Sir.