Moin, from NB and the voltage regulator installed in the control unit, is in operation (turning LiMa) a quite high voltage in the on-board network (with me measured at the ODBII port up to 15V). Can one assume that therefore, especially the main headlights (HB4 with me) have a very shortened lifetime? At least for my taste exactly these bulbs clearly break too often. With my current MX-5 (NBFL) it is already almost two complete sets that I have through . With the predecessor (NB with H4) I had at least only needed one set per year, which is also quite short-lived. If so, what can you do about it? Put voltage regulators in front of the bulbs or something? Greetings Erinya