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Re: Help figuring out this engine buzzer circuit
Yep, I'd agree, oil pressure. Turn the engine over and the oil pressure gets higher, turning off the alarm.
That would explain it if the buzzer is wired through the o.p. switch. But it's wired directly to ground. So how would it turn off when the engine turns over? That's the mystery.
Last edited by tgherzog; 11-17-2019 at 07:00 PM.