Autometer A/t Temp Gauge Install - Which Test Port??

[wild.coast]

Installing a sending unit for an AutoMeter A/T temp gauge. The instructions say to install the sending unit into the transmission test port, but looks like the X has two of em? Any idea which one would be best for the most accurate temp reading?

FSM diagram:

These are technically line pressure test ports, not sure if the temp would be any different... If I were to guess, probably use the test port on the passenger side (Test port for D, 2, 1 positions)?

Anyone do this install? Were you getting accurate readings from the passenger side test port?

 

[Muadeeb]

Use the one for forward gears since you spend more time in drive than reverse (I assume). The fluid at that port will be under pressure and will give a more accurate reading.

 

[wild.coast]

@Muadeeb Makes sense, thx!

And yes, I do spend most of my time in Drive, nor Reverse, haha

 

[wild.coast]

Bah, so looks like this won't work after all. The test port is a super cryptic M10x0.9 thread!! Autometer only makes the M10x1.0 thread adaptor for the 1/4 NTP sending unit. So looks like I'll be installing it into the outbound cooler line (just before it goes into the rad trans cooler). T-connection with hose barbs and some hose clamps should do I think...