I have twin 1989 AQ151C I/Os. They have engine alarms connected to oil pressure and water temp senders on the engines. The alarm horn oscillates (beep, beep, beep rather than a steady tone) When I turn on the ignition, before the motor starts, the tachometer pegs with every beep. Once the motor starts it seems to be fine. I am concerned about damage to the tach. Any idea why this is happening? I don't remember for sure but I don't think it used to do this when it was new.
Thanks, Jim
Thanks, Jim