I want to run an external transmission cooler,what's the best way to run the trany lines?

I know it's not rocket science but I just want to make sure I run them the best/proper way.

Thanks guys!

 

I have ran them two ways. Many times i will run into the bottom of the stock radiator cooler and out the top to the bottom of the external cooler and out the top back to the transmission. You can also just go to the external cooler and skip the original cooler. With skipping the original cooler you will have less fittings and less potential leaks.
Most times it don't matter but I do feel it is best to run the supply to the bottom and the return out the top.

 

I have an-6 lines from the trany ready to go to the radiator and external cooler,I just wanted to be sure before I button it up!