I have a 3 way switch that the first set of points coming in selects the lower track or continue down to the second set of points. This is hooked to a tortoise with a dpdt switch. The led is green when the lower track is selected and red when the rail that leads to the second set of points is selected. The second set of points is set up the same way with a tortois and a dpdt switch. Depending on which way the switch is thrown the middle track or the upper track will have a red/green light. How do i make both lights on the second set of points stay red when the first set of points selects the lower track? Hope this makes sense.