Am I Missing a Grounding Strap For My Gas Tank Sending Unit?

I recently pulled both rear tires/wheels to take a peek at what kind of rear shock absorbers were on the car. I noticed that the previous owner installed air shocks and had zip-tied the air supply line T-fitting to the blue wire for the gas tank sending unit. See the 4 attached photos. Notice in the first pic that the fitting on the air shock closest to the camera (upper left corner of the pic) doesn't have a supply line attached to it.

Two questions for FABO Nation:
Thanks, Dave

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