I have a 2000 accord LX. The lights on the push buttons for the HVAC controls are intermittent. The controls work fine. It seems to happen more when it's cold. Possibly a common ground to those lamps somewhere? When they don't work, they all don't work. Then if I hit the buttons a few times, they start working again. Is there a lamp relay somewhere, or a common fuse? It's just those lights...the dash lights and other indicators work fine. TIA.