?? On neutral safety switch wires

1) Yes the brown wire goes striaght to the starter relay (The diagram has no connectors show is how you would know if you didn't have direct info)

2) Two outside (Black) wire : As you have found one goes to the "C" terminal on the wiper bulkhead connector. The other goes to the "W" terminal on the third connector.

3) The yellow wire (shown as a Dark Green - Red on same diagrams) goes to the "T" terminal on the third connector. (Going thru to ignition switch)

If you are having trouble telling which terminal is which, on the connector look at the wires and the colors of them going into the connector as that will usually let you figure out which is which.

I am highly suspisous of the 73 and 74 wiring diagrams on MyMopar.com. As you would notice there is no wire shown on the interior side of the "C" terminal for the 72-74 years. Don't know if this is the real case or just a misprint. The 73-74 wiring around the voltage regulator has an extra connection show from the brown wire to th "I" terminal on the regulator which would in effect put 12V on the coil at all times. I hope someone can make sure that the connections as show on the "C" terminal is correct and that there really is something on the interior side of the bulkhead connector. I have diagrams from three sources for my 68 Barracuda that I use to cross check and make sure everything is in agreement.