I've looked around but can't seem to find the answer to this very simple question.

On my 97 3500 4x4 w/ an automatic transmission...

Is the return to cooler line the front or back line coming out of the transmission?

I'd like to cut this line and insert a T w/ my tranny temp sending unit.

Thanks,
Mac

 

It's the front line.
Rear is return.

Brad

 

After looking at it... the front one makes since! Thanks
Tranny gauge installed and working!