Bill Is your warning panel that is about 6 inches long and has the other warning lights in a row? I had a similar problem on our 32 a few years ago the alternator was not picking up a good earth through the mounting bracket we fixed that and then found the rear of the warning light panel was poorly installed and the wires were just into a chock block and badly corroded. So much so that we could not get a decent solder joint on them despite lots of cleaning. in the end we had to replace the panel and some of the wiring.