which hardline is in and out of transmission?

hey guys im trying to work out which of these hardlines is the in and out of the transmission... it doesnt tell me pressing on the code which is which

21623 and 21621

this is the page im looking at it just tells me "TUBE ASSY-OIL COOLER" for both lines.

http://www.partsbase.org/nissan/300...er-train-auto-transmission-transaxle-fitting/

im putting a temp sensor in the out line of the trans and need to know which one it is.

thanx

 

The RE4R03A has the outlet about 1/2 way up the gearbox & the inlet just above the oil pan.

You can verify this by checking the FSM Automatic Transmission Section.

The operating temperature for tests in the manual specify 50 to 80 degrees Celcius.

 

these are the only pics i could find in the automatic transmission section

 

Don't they tell you what you want to know?
The IN & OUT positions are clearly labelled.

 

yep it looks like 21621 tube is the one going into the outlet on the trans was at work and didnt concentrate haha