[cessnadriver]

Dr. Dave. Thanks for the reply. The newer C337s have a charging voltage of the mentioned 28.7. But mine C337 is a 1965 the maint. manual calls for 27.7 voltage. So when I contacted Zeftronics they said that was the ACU approved in their STC list? So I went with that one. DO I HAVE TO CHANGE TO THE HIGH VOLTAGE ACU? What about the STC approval?? I'll change the field wiring when I replace the switches. I do have another parts C337 that I could swap the circuit breaker panel, I didn't think of that! Although I did try to remove a couple of old C/Bs once and the screws attaching wires are REALLY tight and the screws are NOT very good quality. But you're right I should do the swap. QUESTION: The odd 8 AMP size in the panel are hard to find any chance I could replace them with the modern 7 1/2 AMP?? MANY THANKS. BILLS