well let me give this a shot . hit the program menu go to screen program 0003 ok hit check mark then find write address hit check ok change address thats where you put new address in then hit your program make sure you are on service track power off on maintrack ALLWAYS. you might program other things to that address or change things you dont want changed. now your loco jerks a little like 2 times . now go back and add the name to that address you like . had no trouble with this method unless i dont have my glasses on and program the main with the power on and program 12 locos to the same adddress . so i added that safety feature in how to do it Dave