Electrical Bulkhead Connector?

You want to get the plastic separated from the bulkhead housing?

There are usually a lock clip, top and bottom, slide a small blade screwdriver in the locked area and pull on the connector. It should start to come loose. They can also be a total PIA to get apart after 50 years of sitting/corrosion.

If you are talking about the actual male terminals, I think we covered that.