I have a 4-6-2 pacific, HO scale, from the most recent run for the Atlanic Coast Line so the tender has a reverse light. I have a DC ready version and added a loksound v5 8 pin for sound. Before adding that, testing the train it appears its wired for the headlight and reverse light to be on at the same time, I'm assuming rule 17 lighting from the factory.
I tried playing around with functions with the ESU lokprogrammer and no matter what I do it seems to always keep both lights on. I would like, if possible, to have them separate. Headlight on in forward, reverse light when in reverse.
Is there a way to wire the headlights for that or is there a combination of functions I am missing?
Sounds like a question for an ESU forum or a call to that particular manufacturer.
Program
The LokSound decoder
CV 33 = 1
CV 34 = 2
CV 113 = 0
CV 114 = 0
Using the LokProgrammer, click on "Function Mapping". Under "Conditions" it should show "Forward F0" on top and below that "Reverse F0". Next column is "Physical Output". That's where you put which light you want to be on when. So for "Forward F0" you would just want "Front light 1" and for "Reverse F0", just "Rear Light 1". If it has any other entries, you can remove them by clicking on the right hand side of the Conditions box for Forward F0 and Reverse F0, which will give you a down arrow opening to a drop box. Just uncheck any lights you don't want.
(In my screenshot, this engine is set up a little differently, so I only use Rear Light 2 (dimmed) with F0, but it shows you where it is you want to look.)
Screenshot 2026-02-25 002149.png