I have an 06 with a 3.7 with no tow package. I pulled my 2400 pound camper with it the other day and the trans over temp light came on when I hit the highway. I immediately got off the highway and cooled it down and finished my trip on the side roads. I decided I would add a aux trans cooler but Im not 100 percent certain which ones are the trans lines. I have a radiator an ac condenser in front of that and a power steering cooler in front of that. From what I can tell it looks like the trans lines run to the top of the AC condenser and below those lines are the AC lines. Any ideas?