I own a mustang 2006 v6 mustang, I have had a charging issue for quite some time. I have gone through 4 alternators, and 2 batteries. I replaced the PCM thinking it was the issue, as well as replacing the positive terminal wiring harness with 4 gauge power wire. I get the engine code P0622 Generator Field F Control Circuit Malfunction. Battery light turns on after about 30 secs after starting. Would love some help possibly regarding the alternator wiring harness and what not.