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NO, its a one time use fastener and removing it or untorquing it
to get a wire under it would require it to be replaced. I would not
recommend using suspension mounting hardware for an Amp ground.
I wouldn't. It's a one time use only bolt, needs to be replaced once removed. Also, it requires 129 ft/lbs of torque when installing. I would use a seatbelt bolt, or some other bolt going to the body of the car.