My headlights will not turn on, but the bulbs are not burnt out.

Could be a broken wire at the socket. Sounds like a burnt bulb also. Sometimes a burnt bulb will do the same thing as you are describing. Once you get this fixed, all should work. If flashing to quickly, replace the flasher stat unit!

one the your light bulbs have a broken contact or the ground shorted out

if the bulb flashes fast then you need to replace one of your bulbs i had the same problem on my mustang the right turn signal flashed like a mad man the problem was the brake light on one of the bulbs died

Instructions

1. • Open the RAV4's hood and locate the headlight bulbs plugging into the rear of the headlight assemblies. Each assembly has two bulbs, one outer and one inner. Unplug the wiring harness from the rear of the burnt-out headlight, by pressing the locking button and pulling down on the harness.
   • 2Grab the rear of the bulb and rotate the bulb about a quarter turn counterclockwise to unlock it. Pull the bulb from the headlight assembly.
     3
     
   • Grab a new 9005 (high beam) or 9006 (low beam) bulb by its plastic base. Insert the bulb in the rear of the headlight assembly, lining up the tabs on the bulb with the notches in the headlight assembly, and twist it clockwise to lock the bulb in place. Do not touch the glass part of the headlight bulb, as the oils from your hands can cause the bulb to fail prematurely.
     
   • 4Plug the wiring harness into the receptacle on the rear of the bulb
     

Hi Legalass, Condensation will be caused by water or moisture entering the head light unit. If the lens is cracked or broken or the cover are not correctly fitted that will answer that part of the question. I think for the second part of the question you should take the vehicle and have the voltage regulator output checked. It is possible that the alternator is being allowed to over charge and when it does, it may be blowing the bulbs! Regards John

Welcome to Fixya
This is a common problem with headlight bulb higher than the 60W bulb. You can actually replace the plug with a ceramic type so that it wont melt. This happens to my car. I am using halogen bulb and burned the plastic mold together with the bulb. Replacing the plastic mold with ceramic type mold fixed the problem.
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LIGHTING Headlights REMOVAL & INSTALLATION Non-Aerodynamic
Fig. 1: Replacing a sealed beam headlamp

1. Disconnect the negative battery cable.
2. Remove the front grille and/or headlight bezel.
3. Remove the headlight bulb retaining rim, headlight and disconnect the wiring.
4. Before installing, spray some silicone grease into the bulb socket.
5. Connect the wiring and install the bulb.
6. Install the retaining rim and grille.
7. Adjustment: turn the adjusting screw (A) for vertical adjustment. Turn the screw (B) for horizontal adjustment.

Aerodynamic

Fig. 2: Replacing a headlamp bulb

Remove the upper air intake splash shield.
Remove the headlight retainer nuts (2)
Remove the headlight/blinker assembly
Carefull the blinker has a retainer post with a rubber retainer on the fender
Remove bulb

they are usually changed from inside the engine compartment. you should be able to gain access to the bulb behind each headlight bazel. the socket often has to be turned to remove it. be careful not to touch the new bulb with your fingers as that will shorten it's lifespan. you may have to remove the battery if the burnt out bulb is on that side.

Robert

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yuo dont need headlight. the bulb is removable from inside under the hood.. just pull the connector off and remove the plastic hold down. you should be able to pull the bulb out.i hope it was helpfull. thanks