Automatic transmission temperature sensor the master debate...

Yes I'm sure I'm going to end up with something on the exit tube close to the transmission. I'll probably bend my own tubes and flare my own fittings..
Not sure I am following you. I doubt that you could make your own
Capillary tube. These come already installed on the gauge and have a fluid in the tube. The heat expands the fluid and pressurizes the gauge to indicate temperature.