Thanks Alehman; we've actually had the Nassau folks out. Tested and said it was exciter. Getting them back out will be another week. Unfortunately the US people aren't able to help (must be a Cat regional license issue). Though I've talked to a few. Haven't given up!
Thanks for the tips; I have little communication due to the weather. Not sure what he means about jumper wires; last time they found the jumper wires to F1 and F2 were "fried". Replaced exciter and voltage regulator; same thing again.
HELP! Anyone know about Cat SR4 generator? I have 8 guys on an island in the Bahamas with this as only source of power; it ran for about a week and has been down for a week. We just replaced the diodes/resistor; exciter; voltage regulator -- still not working. I'm not at the site; getting...