Vauxhall Corsa no lights on dash board

Possibly glow plug relay ? It's not the 1.7 engine is it .Check the earth wire is clean and tight .

Did the suggestion fix the issue? I have a 1.7D Corsa and this morning driving along and all clocks switched off and no indicator soubnd 9although think were still blinking). I was about to head off the road then they cam on again and intermiitently all way to work. This affected, Petrol, temp gauge, speedo and rev counter, plus the onbaord computer. Tried lights and they lit dash display as exopected. Please help me to avoid serious auto-electrical bills