Changing Ford 4.6 serpentine belt

one way you can do it is take a peice of paper draw a digram of circles where each pully is on the 4.6 the alternator is in the middle make a circle on the page and write alt then go to next one. to the right or the left don't matter just so you show it. just like it is in the truck then look at the belt and trace a line around each pulley just like you see it in the truck and you cant go wrong. pay close attention how the belt goes threw the belt tensioner. if i remember right you have to pinch it together and feed it back through the top of the pully (NOS) 8)