I was gifted a 50cc coolster3050B I found bad pin in one snap block, so found bad CDI, as well as possibly coil ordered a set to repair. I am having trouble trying to get light to work, no power at switch, I have one loose snap block with a Blue Green and white wire that I can see was plugged into something but I have no extra blocks to connect it too. Help!! Been trying to find a real schematic to do wiring but can't find only generic and some of the wiring fo a 125cc. That blue green whit block does appear to be in headlight circuit of harness but can't see where it goes too. I am thinking the former owner maybe lost a part working on it. LMK thanks red

 

It sounds like someone may have already installed an aftermarket wiring harness which usually comes with two of the 3 pin connectors with blue, green and white wires. If you only have one headlight the second connector wouldn't be used.

 

Quite a lot of Chinese Kids Quads have AC lights driven directly by the alternator. So, if it is, and you haven't had it started, the lights won't light up.