The running light fuse for the 2015-19 Subaru WRX is located in the fuse box under the hood. The fuse box is located in the engine bay, on the passenger side. The running light fuse is labeled as "DRL" or "Daytime Running Lights".
2020-Present Subaru WRX
The running light fuse for the 2020-present Subaru WRX is located in the fuse box in the passenger compartment. The fuse box is located on the passenger side, under the dashboard. The running light fuse is labeled as "DRL" or "Daytime Running Lights".