It's your ground to the dash. Try this; there is a phillips screw right above the red high beam indicator light,carefully tighten it and try lights. If this doesn't work remove all the screws for the guage cluster,pull it out and make sure the ground wire is still connected to the back of the screw. The same thing happened to me-I pulled the cluster out because i had a hard time connecting my speedo cable. I didnt tighten the screws because i didnt want to crack the plastic. I tightened that one screw and presto! Good luck, Jim. I am also located in Pa, about 60 miles north of Philly.