provides electricity to keep the engine running, recharge the battery, and operate such equipment as lights and radio
An alternator does not need a gauge to work. It is used to monitor the output of the alternator.
If your battery was dead and you jumped it to get it started and the gauge shows your not charging you need to replace the alternator.
That particular wire is usually 10 gauge.
in a series battery, alternator, ignition
Can be a defective voltage regulator.
Weak battery, or weak alternator.
my gauge reads 10 volts drive half mile it go to 8 Alternator is defective and needs replacing.
sounds like your gauge is broken or there is a short in wiring
It means that one gauge is not in the safe zone. Check the engine temp, oil pressure, battery/alternator voltage,It means that one gauge is not in the safe zone. Check the engine temp, oil pressure, battery/alternator voltage,
Can be loose connections or the alternator is failing.
belt is stretched buy new one( serp. or single alt.).
The alternator may not be able to keep up to the voltage requirement of the vehicle check voltage output of alternator w/mechanical gauge