What is this connector/circuit?

Ignition time delay relay it would seem. The colors point to that. They were used For many years and into and after 2001. It is a thermal relay that heats up upon door switch ground signal and operates the lamp for the ignition switch. It gives you time between entry and closing the door to put the key in. The longer you keep the door open the hotter it gets and delays how long the lamp stays on.

They are readily available on the web. Search Mopar ignition lamp delay relay. Mopar used these at least since 1968, likely even sooner. I refurbed mine in a 69 A01 optioned Barracuda.

Likely still a valid part at your local dealer as well.