The head light relay is behind the battery. You can verify you have the correct one by reaching in the car and pulling back the turn signal switch and listening (and feeling) the relay. It is unlikely the relay is your fault cause. More likely is corrosion or cracking of the fuses inside car. Closely inspect fuses by rolling them in their holders inside left door and see if some of them don't fall apart when you do that. It is a wise idea to replace the fuses every 3 years to prevent the inconvenience of having things quit working at odd times (like the fuel pump). when you replace the fuses make sure the ones you get are ceramic and not plastic, some stores sell Taiwanese fuses that are plastic and will melt and you'll end up in the same situation again.