GTOdave

In my 02 nhra TA the lights and the oil pressure and the battery gauges work.. But nothing else does. Including the odometer. When you turn on the key security light and all the other lights flash for like a half a second.. Bought the car this way and looking for a solution I could use any help.. Checked all the fises already..anyone else have any suggestions? Should I just replace the gauge cluster? And how can I tell of the old one is bad