Self contained LED lamps.
Chrome plated housing. Waterproof. 24 high-intensity LEDs per lamp
Usually seen on custom Harleys and choppers but universal 12volt fitment for car or motorbike
Ive used a pair of white ones for reverse lamps and red for fog to good effect on my 64 Galaxie where their slim profile makes them unobtrusive.
Small & bright 36w equivilent. Measure approx 85mm long by 30mm diameter.
Choice of colour