A wire going to the battery broke off, when it was reconnected the gauges and lights on the gauges start working again, however the speedometer and the tachometer did not operate.
It may be the Vehicle Speed Sensor; here's how to replace it copied from another question.
It also controls how it shifts.
The Vehicle Speed sensor is located on the side of the transmission. You...
Most likely cause would be a defective/stuck fuel sending unit, which is part of the fuel pump assembly. Lift the rear seat for access to the fuel pump. One other possible cause would be a wiring...
Stuck Thermostat, clogged radiator, defective water pump, defective fan, fan relay, or blown fuse. A defective radiator cap will in some instances make the car to appear to be overheating.