How much to fix headlight wiring on 2002 impala?

If you have standard halogen bulbs:

1. Burned out light bulb; or
2. Fried wires between the dashboard wiring harness and the headlight bulb connectors; or
3. Fried headlight bulb connectors.

If you have HEI emitters:

• Failed ballast.

On some models of chevies, the DLRs can be changed from headlight tp parking lamps.If your vehicle offers this option then refer to owners manual to make adjustments.
If your using halagon bulbs and not sealed beam type of headlight bulb, your bulb burnout might be do to the way the bulb is installed. Do not touch the halagon bulb with your hands, as they leave an oily residue on the suface of the bulb, which leads to premature bulb burn out. Either wear a pair of gloves or hold the bulb with a papaertowel.
Hope this helps you

Headlights naturally become less bright over time. If the bulbs have not been replaced recently, I would start there. Look around the lamps for any damage, brittle wires/connectors, or signs of burning. If there is a wiring problem with headlights it is almost always right behind the bulbs.

It's possible that both low beams have burned out. These modern bulbs are bright enough that sometimes you don't realize that one burned out, before the second one burns out.
You need to check for voltage at the headlight with a volt meter or test light. Or you can replace one bulb and see it works.
I suppose it's possible that a relay or fuse is out. You might check the owners manual for the fuse location.

Do you have park,signal lights ,check fuses.

There are headlight assemblies available on Ebay for as low as $50 each. I removed mine and drilled a couple 3/8" holes in the bottom to drain the water, and had no more problems.
The headlights are easy to remove. There are two white tabs on each light. Pull them up about 1/2" and the headlight can be pulled out straight forward (after unplugging the wires).

THE LOW BEAM HALF OF THE BULB HAS BURNED OUT AND NEEDS TO BE REPLACED. HOPE THIS HELPS. LET ME KNOW PLEASE. THANKS FOR USING FIX-YA.

It is possible that one or more bulb is the wrong type. Make sure that all turn signal bulbs are the correct ones and have the same number on them (i.e. 1156;1157 etc.) You can look this up at an auto parts store, or have a sales representative look it up for you. If they are all the same, check all the light sockets for white residue, rust, and corrosion. Also check the wiring for frayed or burned (melted) insulation. Replace any damaged wires or sockets, or bulbs.
I hope this information helps you in fixing your lights. Thank you.

2002 impala highbeam light ,with new bulb inplace ,it will not come on.low beam, left turn light works I think it is in the wiing connector the headlight asemble .would like to know how the wring is connecting to the headlight asemble. please help. thanks jame