Trans temp wire 2010 PB 386

[Mrkentee]

I added gauges to my truck, which meant adding temp sensors to the rears and the trans along with jumper wires to the existing plugs located with the wiring along the frame rail. But, I am stumped finding the one for the trans temp.
Does anyone have any idea where I should be looking? I found one for "aux trans temp" and was hoping it could be made to work but you can't. Unless I used an "aux trans" gauge. Because the computer knows the difference. (Multiplex system)
???