I've got a 69 Charger and have developed gauge issues. A while back my alternator gauge shorted out and thus killed the rest of my gauges. I've since replaced the entire cluster and heres the problem. When you start the car the fuel gauge goes straight to full and stays there and the temp gauge goes straight to hot and stays there. The fuel level in the car isn't full. The oil pressure gauge doesn't work at all. The car has new wiring from headlight to tail light. I tried something today and don't know if its right or wrong. I put a ground wire from the cluster to the frame of the car, still no difference. Also under the hood next to alternator pigtails there's a purple and black wire connected with a ring type connector that looks like it would fit the back of the alternator but my wiring diagram doesn't show it. Can anyone shed some light on this? Thanks