Service Manual Isn't on MyMopar

Here's the thing about wiring diagrams

1...The free MyMopar ones leave out some options, and some connectors, and don't document what the connectors look like. Nevertheless, they are free and are still very useful. They are sometimes easier to follow than factory

2...Mopar OEM diagrams up through 72 were "line drawings" meaning you can follow from one point to another. For 73, A bodies, THIS CHANGED. The diagrams are extremely different, and very difficult to trace in that manner. In some ways they are more helpful, EG there is a connector drawing and location chart behind the diagrams.

3.....As noted, the 76 has a few differences between 73 (last year at MyMopar), 74, and 75--76. One difference is the ill fated '74 interlock for seat belts, example