My '99 recently started having an electrical short problem. When I hit a bump, the speedometer and tach quit and the air bag light comes on. Could this be the electrical connector behind the instrument panel? Also, the heater/AC controls started working sporadically and the function displayed may not be the function that comes on. For example, you may switch it to defrost, but air blows out of the dash vents as well_or you may have it on A/C and it would blow out of the defrost vents only. In addition, the blower motor has now quit working altogether. Any ideas?