Mystery wire in headlight harness

Z bulkhead term in 67 was really different! Main power feed to the ammeter! And in 69, like said the 4spd reverse indicator.

I surmise that this has gone on many times and lots of stuff burnt and Or destroyed because of the lack of understanding in the differences present between the 3 years. These are cad re-traces in color from the FSM’s , Dash sheets are combined into one.

I am still working the Dart drawings but suspect the same for them.