Dodgy Earth??

[WildfireS3]

After popping down to fill petrol, for my Mamoth Drive back to Newcastle, my fuel gauge and oil pressure gauge suddenly sprang to life, after filling petrol, they both stopped. I have concluded that this is down to a dodgy earth and the live wires for both these are fine.

Does anybody know where the earths for these are located so I can check them?

Thanks

[WildfireS3]

Have done the rear on, guess it may be the front one. Will check soon.

[WildfireS3]

Rigth, drove out of the house this morning, all gauges working, dorve over a speed bump, oil pressure and fue gauge stopped working.

Dodgy wire.

Have checkd and wiggled the wires to the fuel gauges countless times, the work. Have cleaned off the rear earth point on Nearside, still nothing.

Can't find this one in the footwell, but the engine was hot and I almost burnt myself. Did find a bit where the paint ws coming off the chassis. Will tackle it on the weekend.