I need some help. Just bought my son a 94 Mustang GT. The headlights (Hi and Low beam), speedometer, clock on dash and radio are not working. Everything was working fine. Replaced headlight switch started to work then stopped again. For a while the Hi beams would work but they don't anymore. Parking lamps, turn signals, fog lamps and brake lights work fine. Cant seem to find the problem have checked all fuses already. Any ideas what I could check next.