what line do i need to use for the trans cooler install. i have both trans lines going into the passenger side of my radiator. there is a line at the top of the radiator and there is one at the bottom. which line is coming from the trans mission and which is returning?? please help asap

 

never mind.. if anyone is interested you need to tap into the line that goes into the top of the radiator on a 2003 4.7 4wd quad cab dakota when installing a trans cooler. that is your return line.