Very Best “13 Volt Idiot Light” Since Hector was a Pup!
They call these “Idiot Lights”. An “Idiot”
is defined as an epithet that can be directed at anyone but you.
So do this for your friends—they really need it.
Since your alternator and battery voltage is about 14.5 volts when
the alternator is working, a Low Voltage circuit trips at 13 volts
to tell you that your alternator has failed—and from that
point you’re going to be losing electrical energy—so
you’d better start making plans if you need the electrical
power. The FADEC computers cut out at somewhere over 10 volts so
you need a warning indicator
This light will also tell you if your water pump/alternator belt
breaks. If it illuminates you can look at both your voltage gauge
and your water temp gauge to determine the cause as you locate an
emergency landing spot on the ground. If it is a belt break, the
water temp will begin to rise and an emergency descent will be necessary
to save your engine. An alternator
warning light is a super investment and should be on every