The two lamps on this signal are wired to flash simultaneously, i.e., both flash on and off at the same time.  What would I need to rewire them so that each bulb flashes alternately?  It's probably a different board, or chip to replace the one that's originally built into the unit, but I don't know what part it would be.  Thank you.

The Crossing Gate would have to be modified if you want the lights to blink alternately. Each bulb would have to be wired to a separate activator, an electronic board, or insulated track sections that will effect the blinking.


Larry