Where is the turn signal module for a 1990 Harley FXR Superglide located?

The turn signal module for a 1990 Harley FXR Superglide is typically located under the seat or near the battery. It may also be found in the wiring harness running alongside the frame. To access it, you may need to remove the seat and possibly other components for better visibility. Always refer to the service manual for specific details related to your model.