Tranny temp sensor

[Magnum5.9]

I am looking into putting a tranny temp guage on so I can read tranny temps, does anyone have any write ups or info on how you put the sensor in, where you put the sensor in and how you wire power to the guage?
Thanks!

 

[Magnum5.9]

Called a local tranny shop and they said roughly 200-300 for the temp sensor installed