Howdy All,
This sounds stupid even as I type it, but Is there any way that driving my 83 water cooled Vanagon with the headlights ON, would affect the water temp gauge reading?? Stupid, right?  But I swear i have noticed that when I drive with headlights on, even if the outside temp is a little cooler, my temp gauge reads higher!  I have noticed this at night and in heavy fog when i have had lights on.  Can outside humidity also affect this reading.  Is it possible the head light wiring is arcing with the temp sender wire or something, Or is it JUST A COINCIDENCE!?!?!  PS, It's OK if you laugh at me for asking this question ;-)

Peace, JB
'66 Split Window Camper
'83 H20 Vanagon

"You cannot simultaneously work for peace and prepare for war..."