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1996 Renault Laguna - Temperature gauge earth
I've got a problem with my 1996 Laguna 2.2 diesel.
It's nothing major but it's beginning to get very annoying!
The engine coolant temperature gauge behaves strangely whenever anything electrical is switched on. Turn the indicator on and it ticks up and down, turn the headlights on and it jumps up several mm and does the same if you put your foot on the brake. When it's not suffering interference it reads correctly. None of the other gauges are affected in this way only the engine coolant temperature gauge.
I'm thinking that it must be a poor earth somewhere but I don't where to look.
Could anyone tell me where the earths are for the dash loom and the temperature gauge itself please.
Currently in weaver's garage:
1996 Renault Laguna 2.2D RN