Ok, What have I done now... (904 problem?)

are you running a remote trans fluid cooler? or is it still running through the radiator? if so, and my memory serves me, the fluid travels into the passenger side and exits the drivers side of the radiator. i dont know what kind of psi it runs, but you will know gauranteed if it is working or not because if you arent ready for it when you pull a line off , it will get very messy. the last time i did this i had an assistant shut the car off after i was sure it was pumping. maybe someone else has a better way to check this idk