Last week a collegue informed me that my passenger side rear tail light was out(1997 300Tdi Disco), I got a bulb changed and no different. Tested one I took out and it was fine. I then checked all my lights and found that my front and rear were all out. This afternoon I have had a meter across everything I possibly could, checked all fuses(and swapped over) but no isssues. Strange thing though is that the rear tail light that has the brake light on it works when brake pedal pressesd so I am thinking it maybe my stalk light switch. Does anyone know where the earth points are for the passenger side? I can find the drivers side which come off battery and also the one of wiring loom that connect to the wing but nothing except washer pipes on passenger side. Any help appreciated.