I have an older gm car with a 63 amp alternator with just the positive negative and the two regulator leads.....the alternator will not charge the battery in the car, it's an old chevelle that originally had a generator with an external regulator but the whole wiring harness looks like a total hackjob....I just need to find a quick and easy way to make it charge so I can drive it and not have to worry about it not starting back up, plus I need lights at night, any suggestions?