If your talking about the "J" shaped drip rail, I install it in front of the hinge, over the door & just under the door sweeping partially up over the fender. I helps keep driven rain water from being forced through the bottom door seal. Danny
"Conditions are never just right. People who delay action until all factors are favorable do nothing". William Feather Don't accept "It's Good Enough" build to the best of your abilities. Teardroppers Of Oregon & Washington