Crumm
Fordoholic
The door on the OBS trucks is square so you can just set the cap on top of the door. The tether comes tight about the time the threads are on the top of the door and the tension holds it in place. Been putting it up there for over 10 years and have no paint rub yet.Over the last 4 years of fueling up, the fuel cap has slowly scratched the paint from when it hangs down during fuel up.