Vehicle & Technical > Defender

temp gauge moving when lights on

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HiQ Lee:
I have a question about the temp gauge on my 200 tdi defender when i switch the lights on the gauge moves all the way up into the red when they are off it moves down to normal.Please help

90Mike:
Don't drive it at night and it will be fine  :roll: or start by checking all your earths i know Andy occasionally had problems with it when he owned it or check the output on the alternator with the lights on and see what thats doing  ;) 

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