I modified some 027 switches for direct voltage, but when I connect them in my layout they are receiving voltage from the track and from the direct voltage–and are not working correctly. Does anyone know the correct connections for 027 direct voltage in a layout? Thanks.
From the Lionel website:
Unlike their bigger brother, the 022 type “O” gauge switch, the 027 switch is designed to receive its power from variable track voltage and works best between 10 to 14 volts. It does not have a “fixed voltage” tap… that is unless you perform the following, very simple, modification.
First, you will need to remove the switch housing that covers the coils. To remove this housing take out the single screw that’s holding it in place. The double coils are now exposed. You will see three insulated wires going to the two coils; one wire on each end and one wire in the middle between the two coils. This middle wire is the one that we will be changing. This middle-insulated wire is actually covering two copper wires within one piece of insulation. Gently pull on the insulation covering these middle wires to give yourself some exposed wire to cut.
Now, clip the insulation and wires about ½ inch from the coils. Wrap the clipped wire ends coming from the bottom of the switch with electrical tape. Next, using a modeling knife carefully scrape any clear varnish insulation that may be on the ends of the wires coming from the coil. Removing any varnish will allow for a better connection. Once you have removed the varnish, twist the two wires together. These wires will now need to be soldered to a small length of “jumper” wire, approximat