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SwitchPILOT hookup for Dwarf yard lights

3550 Views 4 Replies 4 Participants Last post by  John Rhodes
I need help working an HO dwarf signal light with my Shinohara point.

Scale: HO
Controller: ECoS ESU
Decoder: SwitchPilot Servo (51802) May 2008 version
Servo: Tower Pro (SG90)
Yard Light: Green over Red (2mm LEDs made Railroad 2 aspects Dwarf Signals Lights Green/Red - three wires, red, green, common)

Basically, I have used all 4 positions for servos on the SwitchPilot and want to wire Dwarf yard lights indicating which routs are active. I understand how to wire the yard light directly to the track. However, I would rather have them connected through the decoder if possible.

1) Can this be done without having to purchase a SwitchPilot Extender?
2) If so how should I wire it?
3) If not, how does the dwarf light get wired to the SwitchPilot Extender so that it works when I switch the point?

Any thoughts/assistance would be greatly appreciated... :>)
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There are two independent sets of terminals A and B for each of the SwitchPilot Extension ports. So you could use the A set to switch frog polarity and the B set to switch the supply to your signals. So forget all this wiring the signals to the track business. It is unnecessary if you use SwitchPilot Extension.

You could wire the signals so that when one road shows red the other shows green and vice versa using just the B terminals, by wiring the red LED from signal 1 and the green LED from signal 2 to terminal I and the the red LED from signal 2 and the green LED from signal 1 to terminal II. Then when you sentd the command to change hhe point the frog polarity and the signal aspects will change as well.

A word of caution, when using SwitchPilot Extension with SwitchPilot Servo t oswitch the frog polarity. Make sure that CV49 is set to use the "decelerated" values to delay switching of the ports on SP Extension. Otherwise the Extension could switch the frog polarity before the point blades have moved and cause a short.
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