I have Wig Wag Back Off modulator combined with all LED bulbs on the back.
Than I added an Abrams LED light right above the license plate. It fits perfectly where the reflective light originally is. It is a light made for emergency vehicles - if the driver behind you can't see it, he/she is either blind or dead.
You can get it either white (clear) or red cover, as long as it lights red (see photos). Not very expensive either ($25-$30), search for "Abrams LED T3-R" .
Abrams have a different lighting pattern than your Back Off, so all of them will blink but in a different "rhythm".
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