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Settings for the White Wire:
CV49 controls what the white wire will do
CV34 controls which function button can be used to activate the white wire
CV64 will allow you to dim lights attached to this function
Function 2/Yellow wire This function is usually used for rear 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).
Settings for the Yellow Wire:
CV50 controls what the yellow wire will do
CV35 controls which function button can be used to activate the yellow wire
CV64 will allow you to dim lights attached to this function
Function 3/Green wire: (also known as Aux1): usually used for cab or additional lighting (diesel) or
flickering firebox (steam). Default is for steady light, non directional. Operate with function 1 (Can be re-
mapped to operate in other ways or with other buttons if you prefer)
Settings for the Green Wire
CV51 controls what the green wire will do
CV36 controls which function button can be used to activate the green wire
CV64 will allow you to dim lights attached to this function
Function 4/Purple wire (also known as Aux2: usually used for added lighting or DMU interior lights etc.
Default is for steady light, non directional. Operate with function 2 (Can be re-mapped to operate in other
ways or with other buttons if you prefer)
Settings for the Purple Wire
CV52 controls what the purple wire will do
CV37 controls which function button can be used to activate the purple wire
CV64 will allow you to dim lights attached to this function
Changing the way that a function acts and activating special light functions
Rather than give you charts to read which often confuse those who are new to DCC, we have chosen to list
the actual settings for you function-by-function.
Which CV? The specific action of each function wire is controlled by a CV number specific to that wire
White wire: CV49 Yellow wire: CV50
These always stay the same, even when you use “function mapping” to change which function
button actually makes the function turn on and off.
To change the way that a function acts, simply change the number in the appropriate CV in
accordance with the listing below.
Please, do have a go – if you make a mistake it will not matter as you can always change it
back or simply reset the decoder by entering 2 into CV8 and the lighting will revert to the
factory default which is constant bright light.
Light Effects: Effect Forward Reverse Both
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