Block signal 42101

[arbasu]

Are these electrical? I mean do the lights actually glow or they are just decorative pieces?

[ABC]

No lights are included, so no they do not "Glow". But you could buy some LEDs and wire them up probably.

[jward]

these are not lit, but they can be easily converted by replacing the lenses with led's. hiding the wiring for the led's is a problem though.

that said, these represent a relatively rare 2 indication block signal, most were 3 indication (red-yellow-green) just like a traffic light. the 2 indication ones i saw were often used to indicate the position of switches at junctions on an otherwise unsignalled line. modelling those signals would be as simple as hooking the wires up to the spare contacts of your switch motor, or a snap relay.

[DUCKY01]

I use the Bachmann Block Signals but remove the fake lense and replace
them with small red & green LEDS. I connect the cathodes of both LEDS
together and wire them to a 5 volt Power supply with a 1000 ohm resistor.
The red and green leads are wired to Snap-Relay contacts for switch position
status or to a Block Power Relay to indicate which Cab is powering the Block.
I use very thin Wire Post Wire from Radio Shack, that comes in red, white and blue colors, and use thin heat shrink tubing to conceal the wires behind
the ladder and through a hole drilled into the Block Signal Base between the
ladder and the Signal Mast. I use white wire for the cathode (common) and
red and blue wires for the LED anodes.