How to set headlights ?Please explain how to ?

These links show multiple fuse boxes and fuses which have something to do with daytime running light and lights.
Fuse box location and diagrams: Toyota Camry (1997-2001) - YouTube
Toyota Camry (1999 - 2000) - fuse box diagram - Auto Genius
1999 Toyota Camry Headlight Bulb Replacement, Relays and Fuses Explained - YouTube

Toyota Camry 2000 model headlight fault high beams not working xv20 Camry headlight switching off - YouTube

Toyota Camry Lights Not Working - YouTube

Headlights quit changing on gauge? Please explain.

go back to were you had the sensor replaced and have them repair the problem this should have been working properly before it left the shop.it could even be a bad sensor.

You need a tune-up. I also own an Aurora. This is a great vehicle. Mine has 189,000 miles and all thats been done is spark plugs, alternator (which would explain the headlight dimming on yours, check if it's functioning) thermostat and harmonic balancer. If this was at all helpful, please rate. Thanks for asking.

That is normal... (for safety in the daytime).

Notice that in the daytime, the HIGH BEAM lamps are lit, but they are "dim", not bright.

If you turn ON your headlights in the daytime, a different set of headlamps light up.

Hope this explains that....
Now you may notice "many" cars in the daytime with headlights on...

Your headlights are just bulbs that need to be changed from under the hood. When you open the hood and look at the back side of the headlight you will see the wires sticking out.There is a black plastic ring that you will need to twist counter clockwise about 1/4 of a turn then pull. You will end up with this ring the socket and the old bulb in your hand at this point. If you look at your new bulb (don't handle by the glass!) and compare it to the old you will be able to see how the socket comes off by pulling. Reinstall in oppisite order and you will be fine.

Julie.... fairly easy to do. the bulbs are changed from inside the engine compartment. you should be able to see the connector going into the back of the bazel (headlight). generally the connect has a ring on it that you have to turn or you may have to turn the socket to remove the bulb. be careful NOT to touch the replacement bulb with your fingers as it will shorten the life of the bulb. unfortunately if the bulb is on the side that the battery is on you may have to remove it to gain access... if it is i'll explain that to you as well... not that hard to do either.

Robert

Please take a moment to rate this solution thanks (trying to get my average up as we are basically all volunteers)

its upfront near the headlight and the only way to get it off is to take off the bumper and headlight/ If you want to do this I can explain/ let me know/ Please rate my response thank you very much

The Xterra doesn't have stock xenon headlights, so are your lights aftermarket? If not, there is a retaining ring on the back of the headlight housing (under the hood) and you just turn the ring counter clockwise to detach and the the bulb comes right out. Installation is the reverse of removal.

Hey Bunkyk:

Look in you owners manual and you will find clear instructions explaining how to remove the headlights. I used the owners manual which explained how to remove clips that are holding the headlights. I hope this answers your question.
Ray