Ford Repair Questions? Ask a Mechanic for Answers ASAP
The battery light comes on when the Engine Control Module doesn't see the required field current from the Alternator. It could be the Alternator that is at fault, the wiring between the Alternator and the Engine Control Module or the Engine Control Module itself.
I suspect if the wiring repair you had carried out cured it then I suspect it is probably a poor quality repair.
The best place for diagnosis and repair would be your local Ford Dealer who have the Ford Trained Technicians, and Ford Technical Information at their fingertips.
If you've gone and fitted an aftermarket part then anything is possible!
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