Don't drill holes...

Placement of backup cameras is usually done by replacing one of the license plate lights.

Also your photos are not showing it's only showing a broken link. (for me at least)

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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course