Welcome, here's the factory manual. The first 64pp. are annual updates, then the manual begins, sorted by area of the bike. The Appendix at the end has nut/bolt sizes/threads, and torque values, routing for cables and hydraulic hoses, and much-more, Print-out a copy and keep it in a 3 ring binder.
Here's the 1990-2003 wire diagram.
The forum has a good search function, use it, upper right hand corner. A great resource for seeing what's written on something you may be having issues with.