Abstract: A magnetic automotive lamp current sensor has a coil 12 connected in series with an automotive lamp 14 (FIG. 2). The coil is mounted on a core 15 having a channel 16 through which the turns of the coil pass an has an opening 18 in which a magnetic flux sensor 20 is inserted. Whenever the lamp is powered and functioning, a current flows through the coil inducing a magnetic field in the core which concentrates in the opening. The flux sensor detects the magnetic field and generates an output which is regulated by a transistor 50 to drive an automotive circuit 53 that monitors the operation of the lamp.