I did this and instead of drilling holes I rigged it with velcro - my display was red, while being stopped by the cops after sunset for some odd issue like a 2 mph speeding warning - the cop lost his marbles and called backup assuming it was some sort of weird timer.

Use it with a switch or something..

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)