dpgibbons Posted May 7, 2021 Share Posted May 7, 2021 (edited) I'm putting Zimo sound into my Heljan O Gauge 43xx. Before I try the motor tuning tips in the manual, any guidance please on the optimum CV settings? Also - I'm wondering how to connect the firebox LED. I assume it's controlled by the small PCB stuck on to the main Heljan board, which is linked to 2 pairs of white/brown leads. Edited May 7, 2021 by dpgibbons Link to post Share on other sites More sharing options...
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