67 Barracuda - Anyone Recognize This Plug Connection In Trunk?

Pulled apart this plug connection in trunk of my 67 Barracuda. One of the spade connectors has turned into green goop. It is located in the left side of the trunk. Looks like it crosses over to the right side - maybe to the dome light and rear speaker? My dome light on the passenger side does not work and I don’t think the lone speaker works that is mounted in the right rear. Looks like 5 wires go into the plus but only 3 wires come out of the connecting plug.

I chased wires all day yesterday for a different issue (reverse lights). Hoping one of the wizards on the site can give me a head start on this issue.

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