The engine stock number is 6838-1, B40-8 from early 2000’s. Any idea why lights (all) work under conventional power but not Legacy? I haven’t run it for awhile but no problems with this engine in the past. I checked for any obvious problems ie wiring, loose connections and/or boards to no avail. I also tried reprogramming and the aux 1 (although that might not work with a legacy controller). I tried numerous times switching it between conventional and command with lighting working only under conventional. The controller reset button has no effect. Other Atlas engines work fine on the layout.