The invention concerns an electronic module for a motor vehicle, in particular a fan regulator (4″) with a control input (S) for a signal, in particular a pulse width modulated signal, transmitted via a signal line (3). The electronic module is designed for the generation of an essentially constant potential (Ubias, Ubias−UBE) at the control input (S), which preferably is designed as a current-controlled, low resistance control input. The invention also concerns an arrangement (1″) for the transmission of a preferably pulse width modulated signal with: a control device (2′) for the generation of the signal, a signal line for the transmission of the signal, and an electronic module as described above.