Ok this one has me stumped on what they were thinking or maybe my car is just missing something. 1971 Dart Swinger with a bench seat and lap belts for 3 people. My question is about what looks like an early attempt at a shoulder belt one on each side, but what were they to connect to? If I try and use one of the lap belt latches to attach it to it would come across my neck or head…no thanks Ralph Nader. What is going on here was there a 3rd piece to this at one time. Anyone have owner’s manual instructions or pictures.