Bulkhead Connector

What are we working on? Middle one could be different thru the years. Just in case. Does the middle one have locating tit in the middle(same as pic).

It’s a 1973 Dart Sport. I’m not certain if it’s original or not, but it looks identical to the pic as far as I can tell.

My problem is that when I go from accessories to Ignition, I get an amp drop of .3. I’ve replaced all sorts of jacked up fused wiring and at this point I can’t find the issue. I’ve traced the wires and replaced the ones that were bad. No luck finding the issue though. The female connection sides look good as far as I can tell. The only thing I can think of at this point is to replace the connector.

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