About a month ago my car started to stop working. It will start some of the time and when it wont start i can turn the key and it just makes a clicking noise. I bought a new Battery, Starter, and engine switch. I had my alternator tested and it was fine. Now it is doing it again. What could possibly be wrong. Ive been told its a wire some where/ wiring problem. The car has a 3.1 engine in it if that makes any difference but please help i need some sort of answer or clue on what to do?