Bachmann Block Signals HO Scale
The “Bachmann block Signals HO 4210” are none operational signals but I was able to use them as a base and make them operational. First I did some paint on them to make them more realistic looking. I then replaced the Red and Green plastic lights with 3mm LED lights. I connected them to a 12V systems using a 680 ohm resistor. I now have operational signals for about $5 to $6 dollars apiece. The price was right, Works for Me.