I have just replaced the battery and the altanator but the charging system is still not working. the new altanator I just had tested to make sure it is good and it is. Using a test light I get no power out of the red wire coming from the altanator and I don't mean the big red one going to the battery. can you tell me what to do to fix this problem.
Optional Information:
2001
Lincoln navigator 5.4L
Already Tried:
changed the old altanator that was no good and put a new battery in.