Diode Dynamics 44mm SML9 LED Bulb - Amber Set of 4Features Direct replacement for factory 44mm hook and loop style bulb Increased output with LED appearance Plug and play simple installation Overview Design. The 44mm SML9 LED bulb is a direct replacement for any 44mm size bulb commonly found in door lights and trunk lights in many vehicles. Populated with nine 5050 size Epistar SMDs the SML9 upgrades the factory yellowish incandescent bulb to a more modern LED appearance while adding far more light