Nissan Repair: No low beam on my left headlight, nissan terrano, low beam

Question
My Nissan Terrano's left head light is faulty. The high beam works but not the low beam. A friend suggested that it might be a relay box switch fault. Trouble is I don't know where to find this relay box to check it. Do you know where I can find it or do you think it might be something else. I have put a new bulb in but did not resolve the problem. Please help me. Thank you.  

Answer
Bryan,

No relay on your car.  It is all in the headlight switch.  Replace the headlight switch and your problem will be solved.  Check out rockauto.com if you can wait for a delivery since they are the most cost effective.  Most parts stores will have to order the switch.  About $100 bucks at the store and much cheaper at the site mentioned.  Courtesynissan.com is another source.