My 40 amp alternator in my dart took a dump last night. I figured since I've added injection and electronic ignition, I would upgrade to the 78 amp alternator and the newer style voltage regulator. I do have the injection system, electronic ignition, and headlight system attached to the back of the alternator. I did add in the second field wire. Now my ammeter is pegged to the charging side, but the battery is only getting 12.8 volts. What could cause this? I do have another voltage regulator I could try. Could the field wires be plugged in wrong? Electrical is not my strong suit. Thanks!