SAE Standard:SAE J2261-2002.26Diode LED array displays a full pattern light output design.Front/Park/Turn lampcombined functions.The truck lightswere 12V and 24V 2 series of products can be designed to adapt to other working voltage.Electronics completely sealed in epoxy to resist corroosion & moisture.Polycarbonate plastics are used to manufacture most lamp lenses and housings, providing a much more impact resistant construction than that of typical lamps made of acrylic plastic.Diodes and circuitry are additionally protected when LED Lamps are sealed through vibration and sonic welding. A seal that bonds the lens and housing together by joining the two plastics, lamps are impervious to moisture and corrosives, with a seal much better than those created with glues.Hard-wired design eliminates the need for plug and enhances reliability by eliminating the possibility of lamp-plug failure.LEDs have no filament, therefore are extremely resistant to shock & vibrate.