I am replacing the buzzer as it is intermittent. Sometimes will work at key on, sometimes when testing with switch, mostly sounds like a clock ( tick tick tick). Diodes gone bad. My question is about the idiot lights. Oil and temp work at key on and test but the Gen light never does. I checked connections and continuity, voltage and all looks good, maybe. I can get the light to turn on by bypassing and hot wire. Is it possible that something at the alternator is bad? I have checked and it is charging. forgot how many amps out put, but it was good. Off subject, the PO must have been Italian cause all the wiring looked like spaghetti. AND he must have loved it ALOT. hahaha.