this....put a set in my rear bumper for same reasons....didn't want them connected to reverse lights, so i rigged them with an on/off remote.....i can use them anytime taillights are on.....when they roll in behind me, i can hit the switch and most take the hint pretty quick....if not, there's a strobe function!......i'm surprised just about every day at how many people drive around with hi beams on and no regards for others
crap video of em:
https://imgur.com/gallery/5ZTIYOn
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