Question about 1994 Ford Mustang
Hello, I think I would just change the Ignition switch if you do not want to test the circuit to the Alternator. When you run the Alternator, it needs an input of 12 volts before it can make an output charge of Amperage to the Battery. If the Alternator is not getting power through the Keyswitch, it will not work.
This would not show up on a bench test of the Alternator, because they would hook up a 12 volt source in the shop. The problem is the wiring in your car, something is preventing the Alternator from receiving the power it needs to work. Besides fuses, some cars use Relays which are in an underhood Powerbox.
Ask the Autoparts clerk what they show for power Relays for your car. If they show just straight fuses, then you have already looked at the fuses and probably have a bad Ignition switch. The Alternators have had built-in Regulators for some time so unless you have a separate Regulator all it can be is a power feed problem to the Alternator.
Posted on Apr 07, 2011
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Posted on Jan 02, 2017
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