Just use your rear view mirror. Point it directly backwards and there should still be enough light to annoy the hell out of them. I do it regularly on my morning commute and it is very effective.

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As another PSA, if you reply on comments like this to go about wiring anything electrical, do yourself a favor and call a professional.

The car in the video is stolen. Whose home do you think the police are going to end up at if they just follow the license plate registration?

Lifted trucks. My assurance goes up 10x if they have rims and tires meant for the road.