727 temp gauge

I run an electric temp gauge with the sensor in the back of the trans pan. Simple drill and tap for the fitting thread size and your good to go. I like electric over mechanical because when I service the transmission, I don’t have to worry about pulling the sender out of the pan,
I can just disconnect the wire from the pan. Plus I’ve had 3-4 mechanical water temp gauges fail in the past couple years in multiple cars. I even went electric for water temp gauge.