First things first - I hunted for days to find a manual for my bike. I ended up buying it but here it is for you. 637 pages of good clear stuff! Wiring diagrams and photo's showing how to repair and maintain.
1986 - 1993 Sportster Manual
In Aussie now so have to ride a 650 for 12 months - stink bro.
but here is the New bike! coming soon