Hi all! So i have a small problem again... Maybe one of the members are faced with this problem... When I turn on the lamps my temp gauge shows 10 c° more and the fuel gauge shows less... It gets worse when i press the brake pedal... If i turn on the direction indicator the gauges are bouncing in the same rythm as the direction indicators... I think it's an earth problem but i dont know where can i find more earth points... I have cleaned the ones in the engine bay...

I think it will be the earth wire (black) on the rear light cluster that you need to clean the terminal of, tighten (using a small screwdriver to bend the contacts closer), or add a new earth wire soldered to the bulb holder (you'll need solder flux).

-Alex