Re: xa gt dash
Just check all your fuses - there is a fuse for the lights.
Dash light wires are a red/blue colour.
RPM would be a pink/light blue wire. Make sure it's connected to the back of the dash. Goes to the NEGATIVE on the coil.
Fuel: check wires on your fuel tank sender (should be able to access through boot floor) and check connections in back of dash. Your sender could be faulty also. I hat fixing these ones.
Temp: red/white wire (don't confuse with the oil, white/pink). Again, ensure connected to back of dash and wire goes all the way to sender in your block. It will be just in front of where your thermostat housing is. A small round brass object about 2cm in diameter. The wire simply clips to the front of this.
393 Tremec TKO 9"