OK, first pic shows masking tape along right and left side of the edge of the receiver hitch. Picture the plastic tube held in the hitch receiver with the pin and then you put the bumper cover back on. You now know where the edges are and can drill holes just to the outside of those edges which will also go through the ears on the plastic tube in the hitch receiver.
When I took the cover off to place the tape for the pic, it was apparent that the very strong magnets were more attracted to each other than the strength of the 3m tape. I've now drilled holes on either side of the magnets and looped 2 small plastic ties over each. I only used 2 magnets and made sure I had the repelling sides facing each other.
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