Is there a relay switch between the fuse box and the sunroof switch?

Typically, there isn't a relay switch specifically between the fuse box and the sunroof switch in most vehicles. The sunroof switch usually connects directly to the sunroof motor, with power routed through the fuse box for protection. However, some vehicles may have a relay for the sunroof function, depending on the design of the electrical system. It's best to consult the vehicle's service manual for specific wiring diagrams.