there is a easier way!!!!!!! there is actually a bung plug on the 4r70w, its on the driver side, you might have to look around for it, but my sensor i got with the trans guage threaded right in it, and then all i had to do was route a wire to it... ive had it like this for over 2 years now and had no problem... but this was on a 3.8L though!
1985 THUNDERBIRD CFI 5.0L..
h-pipe, shorty headers, stock everything else
DEDICATED TO THE SURVIVAL OF COUGARS AND THUNDERBIRDS