Some polarity sensitive Optocouplers/Optoisolator and relays can build the bridge between the switch and a 153 or similar accessories.
BlueComet400 posted:I wonder if it has anything to do with the fact that the indicators on the OLR switch and controller are LEDs, not incandescent bulbs like on the old signals; would mixing LEDs and incandescent bulbs on the same circuit cause an issue like this?
It is the design on the control channel that is different - not related to the lamp types. As stated above, circuity can be constructed to "convert" the signal for use with accessories.
