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I have a B&C 35 amp alternator and regulator on an M-14P. I installed a new battery during my annual, in March. Flew it a few weeks ago, voltage:14.4; ammeter: near zero. All normal. Then last week I was headed out for a flight and the voltage was 11.5, ammeter showing about +2 amps.
Today I was troubleshooting and found oil in the two-blade plug on the alternator. I cleaned all that out, then ran the engine, and the voltage was at 14.4=normal, but the ammeter was showing a minus 14 amps. Well, I did have the ammeter wired in reverse, so I switched the wires around and got, of course, +14 amps, with the voltage still showing 14.4.
The battery has been on a trickle charge for several days, so it's charged up, and with the engine running and the radios on I am pulling no more than about 5 amps.
What's up, and how do I troubleshoot it? Anyone...anyone...Bueller...
Danny
