Well now that is a problem. The wiring harnesses for anything China are almost universal fit. But you should be able to search Loncin 250 motorcycle wiring harness and get yourself a complete brand new harness. They aren't exactly plug and play but it will be a good start.
Here you go.
https://www.ebay.com/sch/i.html?_fro...ness+&_sacat=0
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