Need some help with electrical connector.

DO you have a factory manual? If not go to MyMopar and download one. You may have to settle for Dodge/ vs Plymouth. There are two files, one for Chassis and one for body.

Find the wiring diagrams, and go on past them a few pages. Behind them are some drawings depicting the various cojnnectors. "CE" means "connector, engine bay" and "CI" means "Connector, Instrument panel

Whatever you are hanging onto does not seem factory. Is it going? to the ignition switch? Maybe a non original switch?

Are you sure the one plug is 2x yel and 2x org, and instead is 2x yel and 2x PINK?