To find it, you'll likely need to:
1. Consult your owner's manual: This is the best place to start. The manual will have a diagram showing the location of fuses and relays.
2. Look for a fuse box under the dash: Many 1999 Dodge Rams have a fuse box on the driver's side, often under the steering column or lower down near the kick panel. The flasher relay is often within this box.
3. Look for a separate relay center: Some models may have a dedicated relay center, which could be located under the hood or in another area under the dash.
If you can't find it using your owner's manual or by visually inspecting those common locations, a search online using "1999 Dodge Ram flasher relay location" along with your specific trim level (e.g., 1500, 2500, 3500) might yield more specific results, including photos from other owners.