Good morning, my name is Michael and I’m new to this forum. I hope the way the question is asked is so correct. For one week, after 40 years, I’m again the owner of a Hercules K50 RL year 1977, which I want to overtake now. For two days the good piece doesn’t start any more. I have run the moped the days before but also only a few minutes. Now it doesn’t start at all. Now I’ve come to the troubleshooting. Gasoline is there. ndfunke comes but the spark is not evenly strong, I think. The ignition is a motoplat. The ignition cable to the spark plug has probably been cut off and then again by twisting the soul together and being wrapped with insulation tape. I have already tried to get a new coil, but that’s probably not that easy. Could I solder the soul of the two cables together? The spark plug is a B8HS NGK, is the right one? I have read a B6HS NGK would be the right candle. The 6 V battery is also flat, but should have nothing to do with the not starting. I removed the battery and first charged. To the left of the battery is such a square box with 2 ports, one of which has broken off. The + cable where the pole is broken comes from the battery. You see photo. Can someone help me ? What is the box, what does it do and where do I get the spare part ? I would be very happy about help. Best wishes, Michael