Low voltage at pin connector on alternator

Russ Cochran

New Member
Nov 26, 2016
North GA Mountains
04 Mustang has low voltage at the pin connector. Battery test 12.5, ignition on pin voltage at 11.45 Any idea what would cause this? Alternator is not getting message to start generating power to battery. BTW new battery and alternator, both test good on bench. No Charge means NO GO. Car is sitting please help if you can.
New mustang 3.jpg
New mustang 3.jpg
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