I recently got a 50cc 4wheeler . No spark at plug. Figured out there is no cdi box or plug connection. 4 wires solid green, black with white stripe, grey , and lite green. Any help would be great

 

That doesn't seem like the wires that would go to a CDI so I'm not sure if you have found the CDI (or where it should be) yet. Check the colour of wires going to coil, and out of alternator case on the engine. Some of those will go to the CDI. Normal colours for AC CDI are black/white = kill wire, green = earth, blue/yellow = wire to coil, red/black = exciter wire and blue/white= trigger coil wire. Many Chinese bikes do not use this standard though, and one or two don't have a CDI, Linmax copied the Suzuki 50, which just has a coil.

 

Well. From coil I have green which I assumed was ground and black with white stripe . When I got the wheeler the 2 greens were taped up and the black and grey were taped up is this a by pass mode or something I did forget to mention it is a 2 stroke 4 wheeler and my wires in question are on driver's side under battery and behind coil . I visually found coil starter relay rectifier I assumed the cdi was all that was left

 

Two stroke wiring can be tricky as they don't follow the "Honda" standard I outlined above. Any idea of the make of bike or engine? An engine number or VIN for the frame can help, as would a couple of side views of the engine.

 

Is this hooked to rear brake light? Is there a safety switch hooked to this ?

 

2005? Chongqing Kinlon 50cc ATV maybe

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Is this hooked to rear brake light? Is there a safety switch hooked to this ?

 

Right so 1E41QMB engine, so a standard circa 50cc scooter engine, bike made by Kinlon, but could have been marketed under any name dreamed up by the importer. Done a bit of Googling and some of these at least do use the same no CDI ignition system as a Suzuki LT50. Two coils are shown on the stator, one feeds a rectifier and battery, the other powers a wire direct to ignition coil, there will be a kill wire, on Suzukis this is a wire that shorts the one from stator to ignition coil, to earth.