Down below the driver's (or passenger's) knees... Mount the gauge to the valence on the inside of the center console.
I mounted my mechanical temp gauge down there.
Here's a picture.... You can just see the Temp Gauge at the bottom of the frame....
Rocky
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.