69 instrument panel ground q

While pulling the instrument panel on Shamu, my 69 Fury III vert, I discovered a burnt ground wire that attaches to the back of the instrument panel.

I cut the wrap on the bundle and that burnt wire leads to a splice of several wires.

I plan on replacing the burnt piece, about 3’ long.

Grounding appears to be not documented in the schematic as they simply use the symbol for ground.

Thoughts?

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Author: 3175375