I have done 4 conversions with LSM-3S-G modules, all fine until this one. Locomotive is running off 18.5 battery, all brushes and pickups removed from loco and tender. Power leads from modual go directly to pickup shoes. When at idle the bell and horn will sound all by themselves, this will happen every few minuets. Is programed for light steam, looks like it is programing, do not know what I could have done wrong. I have erased and reprogramed, still does it. Everything else works on command, lights, horn, speed, ECT. Suggestions.