S adds (to the under-the-louvers discussion)

"be aware that heat from the engine compartment exits through the
louvers.  So shortly after a long trip, the outside temp appears to be
a lot higher than it really is."

Also, if you attach the sensor to the body, then if the body is heated
by the sun then the sensors will be affected.

B&S
'87 Westy 'Esmerelda Blanc'
SoCal

On Mon, 17 Sep 2007 10:59:27 -0400, you wrote:

>Thanks for ideas, all.
>
>I'm thinking the "behind the louvers" placement might work well as long as
>the sensor is out of direct sunlight. Anywhere near the headlight I think
>would falsely increase the temperature, esp. at night...The wheel wells and
>under the van in general I feel is too exposed to water, and if you really
>waterproof the sensor, then how about changing its little battery when the
>time comes?
>
>Strangely challenging problem, inconsequential though it seems. But as the
>globe warms, I wanna know!
>
>Best to all.