LEDs for Class 6, 7 and 8 trucks have ultraviolet resistant polycarbonate lenses and a high diode count. The circuitry uses 85 percent less electrical power than equivalent incandescent lamps, the company says. The circuit board dissipates heat from the diode, producing light without risking damage to the diode. The lens and housing are completely sealed. The LED lights are available in white, red, amber, green, blue and purple for interior lighting and come with a 10-year limited warranty. They are available through authorized Kenworth and Peterbilt parts and service distributors for all tractors and trailers.