Theres a way to simplify the harness to run the bike...Look at the picture I edited theres two main plugs needed.....
Take the CDI plug and follow it back to the ground junction and cut out the grounds hooked to ther plugs and keep the green bullet connector end aswell as the connection to the rectifier plug...........
This will separate out the running and charging system.....Once seperated from the harness lay that out and take pics of that to get the pictured labeled with hook-ups to complete those two.......
Youre gonna need a toggle switch or keyswitch...........you have atleast 1 in-line fuse which will work out ok..........
For the starter solenoid youll just need to remove from the harness a two wire plug that hooks into it the two wire plug coming from the solenoid with maybe a foot of lead wire to wire into the battery,,toggleswitch and starter pushbutton....I gave you the schematic......
After you get the bike running and riding then you can work on the lighting,,brakelight and blinkers which arent too hard............