1. Visit the official Harley Davidson website.
2. Click on the "Parts" tab.
3. Enter your bike's model and year (1993 Harley Davidson Ultra Classic).
4. Click on the "Wiring Diagrams" sub-category.
5. Find the specific wiring diagram you need (e.g., headlight wiring diagram, turn signal wiring diagram, etc.).
6. Click on the diagram to view it enlarged.
7. Print the diagram or save it to your computer for future reference.