I have a sender in both the pan and output line. The one in the pan hardly moves. You could fry your transmission rocking in in the snow, parking a trailer in a tight spot and only see the fluid in the pan increase in temp a small amount. In heavy stop and go traffic, the output line will tell you when to start fast idling in neutral. If you are only going to put it in the pan or body, save your money, or buy a fuel pressure gauge instead. I tell you this after having two senders in both my 93 and my 2001. 5. On the 2001. 5 I had one in the body and one in the line, and moved the body one to the pan at first service. Not much difference in the readings. Hardly comes off the peg. I was in the same rear passenger side port. In the future I would only bother with the output line, as I very seldom switch the meter to the other sender. Sort of an "I am bored driving thing!" OK nothing going on down there, I guess I will switch it back!
Bill most likely will sell you the DC line with the steel braided hose to reach the transmission tank cooler. He did not like my compression connector sender pod and replaced my line with the DC one while doing my transmission. SNOKING