My friend was helping me work on my jeep and his job was to replace the alternator. He forgot to disconnect the battery before he did it. He took off the positive and it grounded out. Now I have no gauges that work. With key on the oil presure needle moves very little and nothing else does anything. The odmeter still works as well. I have checked all the fuses in the vehicle. Anyone have any other ideas I would greatly apreciate it thanks.