Placement of a temp sensor

I use a digital in/out thermometer in my car.

Where would you place the "probe" of a thermometer on a Honda Prelude 92?
I've tried all over the place at the back of the car as far possible away
from all
heat sources but the temp readings keep increasing as I drive. Would placing
it in front of the car help? If so, where would you recommend?

What about the newer cars that already have this installed? where do they
place
the outside-temp sensor?

 

Hi, My 04 Accord has the factory temp sensor just below the front bumper in
front of the radiator . Any other car I know of has the sensor about the
same place. Scott

 

Thanks!

Must be the optimal place then. The reason I placed mine at the back was
the instructions in the manual. No wonder it didn't work properly then

 

I think that most manufacturers place them inside one of the mirrors.
I placed mine in front of the radiator. It is not close to the fins
and is also "shielded" from the radiator's heat by a metal strap (had
to cut the wire to get it through the firewall). It is accurate while
the car is moving but when stopped with a hot engine, after a while
the readings are wrong.