Picked up this gauge and wanted to tap the collective knowledge for suggestions on where the best places to mount the sensor might be.

Click to view attachment

Thanks!

I found that the 911s had a temp sensor embedded in the flag mirror. Not an option for us. Maybe near the horn?
That is a very cool find. If I had one the dial would go in the console.

Behind the fog light grille would be my choice.

Sort of but it needs to be out of direct air flow.
Behind the bumper in that general area..

In a shaded and open area.
On an E46, it is located in that little recessed area. You can clearly see it.
Cool gauge BTW

Click to view attachment

On 356s and early 911s a capillary tube temp sensor was
mounted on a fender brace (passenger side ?) forward of the front wheel below the
headlamp.
It incorporated a warning lamp for freezing temps.
The gauge was mounted to the left of the ignition switch.

I would consider poking a hole in one of the rubber trunk plugs in the front panel and mounting it there. Wiring would be inside the trunk and could be run along the path of the rest of the wire harness.

Correcting for double post. See post #9 below this post #8

There is a hole just under the front hood latch to run the wire through. Then use a longer 6mm bolt in the lower hood latch location. This longer bolt would create a 'stud' on the bumper side of the panel. This stud can then be used to mount your sensor with a nut and washer.

Hey type47. I see your from Carlsbad. You don’t need that gauge. 78 and sunny, 365 days a year.

On most modern cars with auto AC it's behind the grille in front of the condenser/radiator and tucked up in the shade out if the elements

On that car down low in front of the tire is for the traction control to register icy conditions.