Open the bonnet of the car.
Locate the fuse box, typically situated on the passenger side near the windscreen.
Remove the cover of the fuse box to access the relays.
Identify the wiper relay. It is usually marked with a symbol of a windscreen with wipers.
The wiper relay is usually a small black box with several pins.
It may be helpful to consult the car's owner's manual or a repair manual for the exact location of the wiper relay.
