The black and red wire is the CDI power coil.
This Chinese Stallion has an electronically controlled carburettor. I haven't had a chance to look at what kind of ignition system is in there, if the installation side doesn't have this wire, the ignition is probably a DC-CDI type. Do you have spark on that engine? Does it fire up?
Yes, it has a spark, it starts. One more thing, sometimes the lights disappear, once they are there, once they are gone. I looked at the installation and it's ok