Keeway Hurricane 50 electric problem

Hello dear community I have a problem with my Keeway. The electrics spin around. He always shoots me the pears individually, sometimes all together. I have by measure everything ok. The main wire harness is also new, just like voltage converters and the Lima am wheelless oh yes wire harness front is also new(light and standing light). does someone have a advice what it can be? Greeting crumbs