These Demon Tweeks number plate lights are designed to mount on to a flat plate/panel with a rubber gasket between the two for sealing it against water ingress. The bulb is housed inside a plastic lens.
This will replace many classic numberplate lights from the 1930's - 70's, or would equally look at home on a kit car build such as a Locost, Caterham, Westfield etc.
Plastic surround is finished in either black or Chrome.
12V
Dimensions: 110mm x 47mm