Need Help Installing Trans cooler On 2.7

So, i will be making a move from Nj all the way to fl and i will be carrying my stuff on my 6x10 trailer. Did some testing and cruising at 65 with a lawn tractor on it, the trans temps were around 180-181, not bad but when it came to going up some hills or accelerating onto the freeway things got hot and i saw up to 210, i don't want to take chances so i bought a B&M Supercooler To help cool it down a little. http://www.jegs.com/i/B%2526M/130/70255/10002/-1?CAPCID=27177529751&gclid=CNaH4PugirgCFYuY4AodH0cAog&CA_6C15C=1799584676 Now my question is does anyone know what lines are the sending and return lines? anyone have any helpful tips? ( One line has a white dot on it, does that signify something? )

here is some pictures of the lines maybe someone can help point out which one is which.


from trans going forward.


looking up under truck bends to the left.


same pic diff angle.


bend going straight up into radiator.

 

anyone have any Info?

 

herro? anyone out there

 

I just installed a B&M on my 2002 Tacoma 2.7 2x4 Pre Runner and from the extensive research I conducted, I concluded that the rear line on the transmission itself is the return. That's how I did it. I followed that rear line to the front and it connects to the passenger side of the radiator on my truck. Now you will find an in depth post regarding a 4 Runner install and the same rear line runs to the driver's side of the truck. That almost threw me off. It seems to be working just fine. Late reply so you may have already done it.