Sounds like the normal gauge/fan operation for my van.
My gauge needle will go just above the led when I am
stuck in traffic but will go down to cover the led
when I get moving again. This is all with the A/C on
or off. My gauge never went above the LED until I
added RedLine WatterWetter to it a couple of years
ago, now it does it everyday, usually during the
morning commute. I also have the 80F thermostat and
radiator fan switch in the van, neither of which has
seemed to make any difference in the operation of the
gauge or fan here in Florida, but I did notice that
the needle stays below the led when I drove up north.

If you really want to test the radiator fan switch
under operating conditions, park the van on a paved
surface in the sun with the A/C off and the engine
idling on a hot day and eventually the radiator fan
should come on. Make sure both heaters are off.

Good luck,

=====
Tim Hannink
Goldibox - 1987 Vanagon Camper, Wolfsburg Edition
Winter Park, Florida
http://home.earthlink.net/~tjhannink/
http://groups.yahoo.com/group/wolfsburg_campers
http://photos.yahoo.com/tjhannink [Vanagon] Album

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