The outside air physically touches the sensor. If you put the sensor inside a cab light housing, no air would touch it. But at the same time it would give false readings as it would be in a housing that would give off elevated temp readings plus with it being in direct sunlight vs behind the...
Nothing like bringing a post back from the dead after 5.5yrs just to say "I have a pair for sale". I highly doubt that the op is still looking for a pair after all this time.
You'd be better served to put them up in the For Sale section.
I understand that.
Someone asked where to get one. I replied on where you can get an oem unit.
I personally try not to use aftermarket parts if I can help it.
After you get the dually straightened out, put the other 2 trucks up for sale here. Might find a buyer for a big Blick k2500 ext cab w/ title & brand new tires or maybe someone here will want cclb w/o title as a parts truck?