Hello my car is an 89 Camaro RS with a 2.8L V-6 and my problem is that when ever I turn my lights on all my gauges but my speedometer freak out and the only gauge lights that come on are the turn single lights. My question is what is causeing this and how can I fix it? I took out the cluster today and found three bulbs had burned out so I'm gonna replace those. Thanx in advanced.