Car wont start unless door is open

ratty dart 340 said

Oh ok i see now. So i wonder how and why that wire got so hot and burnt that connector. Was it pulling way too much current?

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This (LOL) is the subject of hundreds of threads on this board. The connector terminals used in that connector as well as the ones used in the bulkhead connector, are nowhere near heavy enough to handle the full alternator charge current--expecially if heavier output alternators are installed, and/ or accessories has been added such as two way radio, big stereo amp, etc, OR IF for some reason the battery gets discharged such as someone leaving the lights on when parked, etc, "long periods"

There is a well known option called "police / taxi / fleet" wiring that was used on Mopars with optional 65A alternators. This was a "partial" bypass of the bulkhead connector by running new, larger ammeter wires through separate gromments in the firewall. You can look this up in some of the service manuals, sometimes for B bodies, by finding the diagram depiction optional 65A alternator wiring.