2005 dodge ram 1500 p/uApril 7, 2015which line is the high press. line. the upper on the trans. is the out line i assume Share Tweet Pinterest Keywords:Ram 1500 1 thought on “2005 dodge ram 1500 p/u” Freeautomechanic April 7, 2015 at 7:21 am They are both under pressure as it is one continuous loop. This is why they are both made of high pressure material. The upper line is the out line. Comments are closed.