10–30 VOLT MODEL 20 L.E.D FRONT END OUTLINE MARKER LAMP (WHITE). 87 Model 20 L.E.D lamps are sonically sealed acrylic lamps with a multi-voltage circuitry of 10–30V and hard-wired leads. Less expensive than the flush mounted polycarbonate 18 series lamps, the 20 series are a low profile surface mounted alternative. These lamps meet the requirements of ADR 74/00 as an amber side marker and are ideal for