It seems to be no one has access to Service manual for this Bike (1983 - 1991) So I will ask simpler questions that will help me rebuild wiring to close if not duplicate of original setup.

1 Is Bike an AC or DC system?

2 Is Lighting AC or DC setup?

3 looking for Light sockets for oil and neutral switch indicators. Are the bulbs normal 6V or are they led?

4 From Engine Magneto area. Which Color Wire is for Neutral Switch? from here what does Black Red wire do?

5 I need to replace Left Hand Switches... Do I need to use all the extra wires?

Example:

Black - Horn
Pink - Horn
Yellow/red stripe - Power lighting
Green - Low Beam
Yellow - Power out - Brake Switches / Rectifier Load / Tail Light
Blue - High Beam
Drk Brown - Left Turn
Drk Green - Right Turn
Tan/white stripe - Power Turn Signals

These I have kinda I.D'd

But there is these wires:

Blue - X - High Beam
Yellow - X - Power out
Green -X - Low Beam
Green/red stripe - ????
Tan - X - Power feed +V
Blue/white stripe - ????
Green/white stripe - ????
Pink - X - Horn
Yellow/red stripe - X - Power feed Headlight switch
Tan/white stripe - X - Power Feed Turn signal switch
Drk Green - X - Right Turn
Black - X - Ground/Horn
white - X - Ignition ????
Drk Brown - X - Left Turn

6 Is charging full wave or 1/2 wave system?

Would really have been nice is if "Yamaha Thailand" had even TRIED to answer my emails, I got linksthat they received them opened and read or at least displayed on their Computer. Then links that they erased them without answering.

Anyone who can help, please...
Khun Chai
David