Trans temp sensor
The best method is to install the factory cooler line that was available for the '94-95 trucks. This line has a block on the line threaded for the 1/8 " pipe thread temp sensor. The cost is about $100.
This location gives the highest reading from the trans: the hot oil on the way to the cooler.
Someone is bound to have the part number, I can't find it right now.
Greg L