Bob M may have it right, electrical noise on an old point type ignition system will make a DVM read high. I saw that last summer while checking battery voltage on my Moline Big Mo 400 with stock point type ignition and 3 wire delco.
I checked charging voltage at the battery posts and was getting a very high and eratic reading with a digital volt meter, 17 +. That did not seem possible, as the ammeter reading was only about 5 amps at high rpm.I got my little chepo 50 amp battery load tester with the big analog voltmeter and connected it to the battery posts. It read a correct 14.5 volts. With the engine shut down, the DVM read the correct 12.6 volts, but aparently could not handle the noisy voltage signal from a running spark ignition tractor.
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Today's Featured Article - Show Coverage: Godfrey, Illinois Country Days - by Cindy Ladage. Except for last fourth of July's Old Gold show in Springfield, Illinois, I don't remember when it was so hot. Nevertheless, the heat didn't keep vendors and visitors alike from enjoying the third annual Country Day's Event. Jane Elliott said the event was originally a one man show. "Barry Seiler, owner of Country Town Farm Supply store used to invite people up to the Johne Deere store. He would give hats and a free meal for everyone that brings a tractor." Elliott said while this
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