This has to have been addressed or mentioned somewhere, but I haven't found it. My recently delivered BBSHD from Bafang USA has a 4-wire bundle wrapped together in a sleeve coming out of the motor with the other known cables. I had read when researching this motor that some have a 2-wire bundle for a headlight, but it's even hard to find a pic or wiring diagram that even shows this 2-wire headlight bundle. As a newcomer to the ebike format, I've tried to read a ton of material and reports. I probably missed it, but I've not seen mention of this 4-wire bundle. Is it possibly a head and tail light wire set with 4 wires? Something else? These are very small gauge wires.