Functions as turn stop tail signal light. The light is a surface mount. Youre able to mount it on any FLAT surface! Acrylic lens is sonic welded to the housing. 10-diode square LED light. Operates from 9~16 volts. Waterproof These lights are DOT compliant and SAE Approved ~USA #1 Selling Red Surface Mount LED Light ~ Installation is made easier due to the back being completely flat with no knobs to get in the way. Were offering a Life time warranty on this light!