Brake line on RWAL to right rear wheel,
#2
#3
I think it runs inside the frame rail for a ways..... I know on the full size trucks, that line is almost impossible to see in places. (especially if you have the 34 gallon tank.....) If it's popped, just run a new line where you can, don't worry about putting it back in the exact same place. So long as it is protected, and doesn't shake around, you'll be fine.