The invention relates to a signal lamp (12), a headlight lamp or the like and its connector socket (3) for a vehicle. The connector socket (3) or an electronic component (8) wire-linked thereto includes an electronic switch (8s) between the lamp (12) and a current conductor (1) and control electronics (8) for the switch (8s) adapted to identify a code intended for a particular lamp (12). From the lamp (12) extend two connector pins (13, 13') which are insertable in slots included in the connector socket (3). From a connector socket housing (3, 14), extend flexible tongues (15) which take hold of a reduced neck portion (16) in the lamp (12) for immobilizing the lamp. The lamp selection will be reduced as the lamps performing various functions can be identical to each other and even one and the same lamp is capable of carrying out various functions.
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