How do you change a Scion xa headlamp and blinker?

To change the headlamp on a Scion xA, first, open the hood and locate the back of the headlamp assembly. Disconnect the wiring harness and remove the retaining clip or screws to take out the old bulb. Replace it with a new bulb, ensuring not to touch the glass with your fingers, and reassemble everything. For the blinker, access the bulb by turning the socket counterclockwise from the housing, remove the old bulb, insert the new one, and secure it back in place.