Why did someone splice into this IGN. 1 lead?

Mattax said
Some changes between '67 and '68 but IIRC the connections are the same.
I would check the colors against the '68 FSM or the pdf versions of the same.

Ground is not used.
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Hot is Red. it is the power from the Battery and Alternator.
I-1 (Run) and A (accessory) are hot when the key is in Run position.

On '67 Barracuda the 18 ga blue with white is power to the brake warning light.
16 ga blue with white is power to the ignition and regulator. That I know didn't change.
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Yep I am just leaning the mysteries of auto electrical. It is a lot easier to learn when it is out of the car and laid out on a work bench.
If you noticed in my first picture my ignition switch is missing the original harness clip. Tried finding one, are there any companies that make individual parts of the harness? I just want to replace or repair whatever I can on the original.