I have several new Williams by Bachmann NW-2 switchers that I will be modifying. The modifications include a change out of the Bachmann lighting and installing LEDs for headlights, markers and cab lighting. Since these are switchers intended mainly for yard work I will be adding diode strings in series with each motor to reduce top end speed and to permit installation of directional lighting systems. I will tap off the diode strings for directional lighting. A zener will be used to provide constant intensity lighting. This will allow also the headlights and markers to be lighted while the engine is stationary but powered. I will also install a battery with zener diode network to allow the headlight and cab lighting to be on (dimmed) when there is absolutely no power on the track. The battery system will also have a concealed switch to turn off the battery system when the engine is idle on the track or while in storage.
I will be using high current diodes (10 amps) and 5 volt zeners. A circuit diagram for this mod will be coming.
Note: The directonal lighting will cause one headlight to be bright while the other headlight will be dimmed.
