We’re dealing in HO but this can apply to all,I have a friend that has purchased an automatic crossing lights for his layout, it was installed per instructions and came with the light senser activation in the track,Problems he had-to little light in the room and they stay on,reamedy’s he’s tried,a light over the sensers,then switched to reed switches and magnets,back to the hobby shop to check for defects(non),he’s done everything but put a 500 watt bulb in the room to keep it turned off, any solutions to his delema.