The lights illuminating the buttons on my Disc II 2004 AC/Heater Controler are no longer coming on when lights are turned on. There is no way I have found to replace the light(s) or strip that lights them in the module. In effort to correct the problem I have installed three replacement modules but no joy for working lights but all are operating the AC/Heater correctly and the screen showing the temperature and control operations is working fine. This indicates the issue is something else.. All other dash lights are working correctly. Is there a fuse or connector that I can check for this problem. All connectors to the module look to be in good shape and the wiring behind the module all looks ok without checking each individual wires yet. I have looked at most of the fuses under the dash and under the hood and all seem to be ok but would like to check fuse and connector specific to this light in this module. I have checked the repair manual but do not see exactly the wiring for this specific light in the AC/Heater module. It may be there but I have not found it yet. Anyone that can help or advise would be welcome.