Don't do what I did...
I cheated and put it in the door jam of the driver side door. Nice install since the wiring run is short and nearly invisible. One small problem...
The air coming from the engine compartment goes through that space and preheats the air hitting the sensor! D'ohhhh!
So, I gotta move mine - in front of the radiator is a good idea. Out of the way of the engine bay.
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2001 Solar Yellow SE 4x4 V6 5spd