A light assembly (10) for a vehicle includes a housing (12) having a light-transmissive cover (18) and an RF emission gas discharge light source (22) provided as a self-contained module mountable in the housing (12). The module (22) includes an envelope (24) filled with an RF excitable gas (27) and an RF induction coil (28). The envelope (24) and coil (28) are fixed in working relation to one another in a common base (40). The base (40) also supports an electrical connector (32) leading to the coil (28) and attachable with a mating connector (34) leading from the vehicle power supply (38). The module (22) and housing (12) have mutually connectable mounting portions (48, 50) for mounting the module (22) on the housing (12).
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