another fault 172

[simonb2007]

recently my ph2 172 has been acting up

when i indicate left as the green arrow on the dash comes on the right side flickers and the temp gauge had stopped working

are these problems related to an earthing problem? or something else

cheers

si

 

[simonb2007]

i just tried the self diagnosis method, (press the button on the stalk and switch ignition on) the dials went through the cycle but the temp needle didnt move
should i try another instrument cluster?