Ok, first of all, is it the correct and fitting CDI?
Dimensions, ID#, connector, all the same?
If Yes, back to point zero
-new battery or jump start cables
-all fuses new
-ignition coil, cable, plug, sparkplug new
-relays new
-kill switch cables bridged
-both brake switches working (brakelight?)
-horn working
-lights working
-groundpoints (engine and frame metallic clean)
-all four cables on the ignition switch coneccted
-pigtail from ignition switch in good shape
-big and small connector in front not corroded or loose
..and so on to repeat all of it. Do not rely on "this I already did". Write down each step.