Hello people I have a problem with the pre-glow system of a Mercedes diesel engine. Every time you want to pre-glow, the fuse flies. The following I have done so far: cabling (+) separated from the first candle, fuse remains in it. So no short circuit at the wiring. Mass tape at the last candle separated, plus cables again clamped and fuse remains in it. Mass tape again mounted and the fuse flies out. The glow candles have already been renewed. glowing candles are connected to each other via the typical wire bridges. As slowly as I despair of the pre-glow system. On the glowing candles there are 0.9 V. Is this the maximum voltage the request is allowed or the minimum, so that the candles pre-glow. The plus cable comes from the ignition lock via a pre-glow indicator (a glowing wire) to the candles. I really don’t know any further at the moment.