Early A switch question

I disassembled a 67 switch it may or may not be the same.

IIRC the extra ground is needed for situations where the switch is mounted to plastic. It provides the ground for the dome light switch cir to work ( but don't quote me on it)

Also at some point there was an internal change that caused the front parking lights to be on with the headlights, 67 they are off when headlights are on.

67 Dart Headlight Switch Demystified
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