Yeah there is a tag lamp fixture made for truck step bumpers that fits the hole but... It's lens is half shaded so all the light goes toward the license plate. It doesn't serve just right in this vert application. Better than nothing. I think its this one. Measure the hole before ordering.Post a photo.
I seem to recall someone using a light from a trailer with only minor mods (adding a ground) not sure of the application.
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Yeah there is a tag lamp fixture made for truck step bumpers that fits the hole but... It's lens is half shaded so all the light goes toward the license plate. It doesn't serve just right in this vert application. Better than nothing. I think its this one. Measure the hole before ordering.
License Plate Tag Light 12V 1.1/4 Insert Round Chrome Step bumper | eBay
It doesn't get the required chassis ground when mounted in plastic so one would need to solder on a ground wire.
If these fixtures are going to focus light only into the rear foot wells, dark carpet, especially black will absorb most of the light. Maybe add 2 more at the kick panels or center console to light front foot wells?Thanks for link Ben, that's the same thing I seen posted before. If done properly would look good I would think.