Worked as it should. Thank you

Making any engine even an AC system engine run with this cdi is so easy!Wiring diagram.Holding the cdi where the plug is at the top.Upper left wire goes to one of the pick up coil wires, also know as the trigger wire, crank trigger or any of those terms. Many bikes this is the blue wire in a single and dual wire system. On a dual wire pick up coil it doesn't matter which wire this upper left cdi wire goes to. On a single wire pick up coil this cdi wire should go to the single wire because the ground is coming from the engine case. This will be the only wire involving the pick up coil on a single wire system.So, upper left of the cdi plug, frequently the blue wire to the pick up coil.The next wire is directly to the right of the blue wire and is the upper right wire on the four wire cdi plug. This is the coil positive wire. Either wire in the ignition coil is fine. If one terminal on the coil shows a green mark don't use that one for this wire as the manufacturer wants that to be a ground on the coil.The next wire in a clockwise orientation is the lower right wire which is commonly a black wire and some times red and sometimes black either a red stripe. Color makes no difference, this is only for reference. This lower right wire is power to the cdi. Give this wire battery positive.The next wire is the lower left. This is a ground for the cdi box. Attach this wire to a battery ground and make sure the battery is grounded to the frame. You can never have too many ground points. The only other thing to do is ground the ignition coil and pick up coil. You can ground both to this ground wire and attach them to the battery or just use a frame ground. This is if course speaking of a two wire pick up coil.To recap, starting at the upper left of the four pin cdi wiring harness. Pickup positive, then clockwise to the right, coil positive. Then clockwise down to the lower right, battery positive for the cdi. Then clockwise to the lower left, ground for the cdi.Very simple to remember, pick up, coil, power, ground. Clockwise.Always ground the ignition coil.On a two wire system for the pick up coil always ground one wire and the other goes to the upper left cdi wire that us positive pick up coil wire coming from the cdi box sending a positive signal through the pick up coil and into any ground.I keep repeating these things to make sure it is well explained. It took me a very long time researching this to learn exactly how it works. You can wire any engine that needs a cdi signal to run this way. Ac cdi or DC CDI system will work and run with a DC cdi box. The charging system should still work as long as the stator and rotor are good and turning and connected to the rectifier and it is connected to the battery. The timing advance may not be much on these boxes. Possibly ten degrees as usual. If you have an engine that requires a large timing curve this box may not provide for that. The engine will run very well, it just may not be as powerful above 3 or 4,000 rpm. It may be just fine also. Many engines only need the standard 10 degrees of timing advance. This will make any engine run perfectly other than possibly high rpm.

Got my 125 quad up and running. No complaints

I converted an old points engine to DC CDI with this. You can find details online if you want to take on a project like this. It will require some basic knowledge of SCR and voltage multipliers for the trigger function. The unit worked as expected.