One other point I just remembered on the buzzer wiring, Jordan.
Where it turned to the frame rail from the cab, that curve had a fair bit of play in it. I think that was to allow for any flex of the cab in relationship to the frame at that point. At the box end, the frame and box are a solid, fixed fit, so the curve of the buzzer wire was not as relaxed.
I do not recall ever seeing any trace of rubber grommets in these particular wire holes, but it could make sense. Perhaps test fit a piece of the shielded wire in the holes and see if it leaves enough wiggle room to fit a grommet.
David
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