79' F150 door lock problem
 

Just had my door lock fall into my door this morning. Trying to remember what the plastic piece is called that caused this. Would anyone happen to have a diagram of the door?

I'm not sure what you mean when the "door lock" fell into the door. If you mean one of the control rods, they are held in place by plastic/nylon retainers. If you can't get them at your favorite auto supply store , try one or two local body shops they just might have what you are looking for. There is always the dealer and you never know they might have them lying around.

code b1359 f350 what to chec what accesoriess is the problem

Hi ganicuss! It is difficult to get a diagram of door, better you may consult with experts.