Double check you VIN. If you have a 5 wire ignition switch, your bike is probably a C200, forerunner to the CT90. Is your motor an overhead cam (CT90) or does it have pushrods (C200)? The wiring diagrams are quite different. If your 5 wire ignition switch wires are red, yellow, white. brown and red over blue, you have a C200. If so and you want to know where they go: otherwise check C200 wiring diagram, not CT90.
red-battery power when key is on for accessories, horn, blinkers, brake lights, coil, etc.
yellow- from alternator
white-from alternator
brown- to tail and speedo illumination
red/black-to battery positive (fused)