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Wiring and description of functions and related wire color codes.
All of the active (light or smoke etc) functions of LaisDcc Decoders can be remapped to any function button or
to deliver a wide range of lighting types – directional or constant light, constant dim or rule 17 dimmable when
stopped, flickering fire box, strobe , alternating ditch lights , pulsing dual mars lights , flashing beacons and
more. Specific details of what to change and how to change it are detailed a little further on.
Note please:
ALL “function” wires exit LaisDcc decoders via the harness or at the harness end of the decoder.
Blue Common Wire
This is the “Common positive” wire for all functions (all other function wires are
negative – important to remember if you are installing LEDs). Each function uses the Blue wire as the second
part of its circuit.
Expert Tip
If space is at a premium or if you want only half power to any light or accessory you can connect
it to a white or yellow or green or purple wire, without the blue - using one side of the locomotive pickups as
its return path to complete the circuit – either side is equally OK for this. This form of connection is most
common in N scale locomotives.
Function 1 / White wire
This function is usually used for front lights. The default is for directional lighting
and for it to be operated with the F0 or “Light” button on your controller. (This can be changed or “re-mapped”
to operate in other ways or with other buttons if you prefer).