Theo Posted October 12, 2020 Share Posted October 12, 2020 I have a problem with directional lighting with my Bachmann 2-car DMU. The power car has a Zimo MX648R which does the sound, and switches the front lights from white to red depending which direction is set by the handset (NCE PowerCab). The trailer car has a Lais 8xx00nn non-sound decoder just to operate the lights. When I fitted this about a year ago, all worked well, then recently I noticed that the red lights stayed on irrespective of direction. I've linked up JMRI to the test track and tried to modify the decoder settings there, but it seem to give no changes when I reset the 'function on running forward' and 'function on running reverse' options, I can't get the lights to switch over when I change direction on the handset. Both chips have the same address, and have done since originally fitted. Any ideas? Thanks in advance! Theo Link to post Share on other sites More sharing options...
RAF96 Posted October 13, 2020 Share Posted October 13, 2020 Try a decoder reset on the dummy car. If that doesn’t fix it look at CV29 and try reversing the default direction. Link to post Share on other sites More sharing options...
jpendle Posted October 13, 2020 Share Posted October 13, 2020 Or, if possible, put the Lais decoder in the motor car and program it there. Most DCC systems expect to see a motor load before they'll program a decoder. Regards, John P Link to post Share on other sites More sharing options...
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