Simple re-wiring

If you are not too concerned about "restore correct" just eliminate the thing. I just fed wires right through it, so it "looks" half *** factory, but other guys make metal cover plates and use a grommet. If you do some "thinking" you can make the new harness so that if you have to, as in for painting, you can pull the connector body or cover plate off, and feed the entire harness back into the interior of the car