Electrical problems Sym Orbit II 50 2T

Greetings. I am now at the end with the rate. I have just completely serviced the moped. The only “changes” I have made are to exchange an old turn signal for an original and to replace the bulb for dipped/remote light. The moped starts, BUT Blinkerrelak’s “flatters” or oscillates much too fast. Oil lamp is permanently on. E start does not work. In itself all lights work. Have already tried: – the old turn signal – old bulb in front again pure done – almost all plugs treated with contact spray – oil sensor plugged off. -all lights plugged off to see if the error is due to a certain light – battery measured 8V, which charges straight. (Stand long) Had this problem before, it was due to a loose/wet crimp connection from the old flasher but these are now all original plugs. The only thing I still think would be replacing CDI, but don’t think that does anything video of the situation is in the attachment. PS: yellow switch under the seat is just bridged and with the switch itself unfortunately nothing changes gratefully for any ideas LG Sebastian