Davej Posted August 8 Report Posted August 8 While doing an owner assisted annual, my A&P pointed out the ground support plug is clearly marked 28 volts. Of course the 109b is a 12 volt system. I did not know the aircraft even had a ground service plug. But as the cut out on the lower cowl looks original I’m assuming it came that way. (It is mounted just below the battery.) any other G109Bs have a 28 volt plug? anyone have a schematic? Quote
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