What to do condensation inside headlamps - 2005 Dodge Caravan

Free wiring diagrams here http://www.bbbind.com/free-tsb/ Enter vehicle info. year , make , model an engine . Under system click on lighting ,then under subsystem click on headlamps . Click the search button ,then the blue links one at a time. You'll need more then wiring diagrams . Do you know anything about electronic control modules ? Lighting control module ?
NOTE: Due to varying wattage ratings and resulting current draw, certain aftermarket headlamp bulbs may cause the lighting control module (LCM) to shut down the short circuit protection, resulting in the low beams becoming inoperative. Verify that the headlamp bulbs meet Ford specifications.
Headlamps
The headlamp system is a dual-beam pattern system. It consists of a low and high beam, with a replaceable bulb. The lighting control module (LCM) supplies voltage to the headlamps when demanded. The LCM is located behind the LH instrument panel lower insulator rearward of the accelerator pedal.
The LCM monitors the headlamp switch. If a fault is detected with the headlamp switch inputs, the LCM defaults the exterior lights on.
The headlamps are vented to equalize pressure. When moist air enters the headlamp through the vents, there is a possibility that condensation can occur. This condensation is normal and will clear within 45 minutes of headlamp operation.

Its a problem.
The headlamp housing should be a sealed unit.
The housing could be cracked, or the gasket for the bulb socket could be damaged.

{: ) Some exterior lamps, such as cornering, turn signal, backup, headlamps or tail lamps may exhibit very small droplets of water, a fine mist or white fog (condensation) on the inside of the lamp lens. This may be more noticeable on lamps with "multi-lens" designs and may be normal during certain weather conditions. Condensation occurs when the air inside the lamp assembly, through atmospheric changes, reaches the "dew point". When this takes place, the moisture in the air within the lamp assembly condenses, creating a fine mist or white fog on the inside surface of the lamp lens.
Most exterior lamps on General Motors vehicles use a vented design and feature a replaceable bulb assembly. They are designed to remove any accumulated moisture vapor by expelling it through a vent system. The vent system operates at all times, however, it is most effective when the lamps are ON or when the vehicle is in motion. Depending on the size, shape and location of the lamp on the vehicle, and the atmospheric conditions occurring, the amount of time required to clear the lamp may vary from 2 to 6 hours.
Completely sealed headlamp assemblies (sealed beams) are still used on a limited number of models being manufactured today. These lamps require the replacement of the complete lamp assembly if a bulb filament burns out.

If moisture or droplets appear after being exposed to rain or washing, you can try putting some weather seals on the edges where you think the seal is poor. Check also the headlamp caps. In any case, if the moisture doesn't clear no matter what drying approaches, better replace the assembly.
The bulbs won't cause the moisture, but it is possible that an accumulated moisture on the bulb itself can disable it, although rare.

please rate, thanks.

SECTION 417-01: Exterior Lighting 2000 Focus Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 03/6/2003
Headlamp Assembly Removal
All vehicles

1. Remove the fender splash shield lower retaining screw.
   • Push the fender splash shield to one side.

1. Remove the headlamp assembly lower retaining bolt.

1. Remove the radiator grille.

Vehicles built up to 07/1999

1. Remove the headlamp assembly.
   • Disconnect the headlamp assembly electrical connector.

Vehicles built 07/1999 onwards

1. Remove the headlamp assembly.
   • Disconnect the headlamp assembly electrical connector.

Installation
Vehicles built up to 07/1999
NOTE: Procedure if there is a concern over the formation of condensation inside the plastic headlamp lens or if the plastic headlamp lens is split.
NOTE: It is normal for a small amount of condensation to form on the inside of the plastic headlamp lens, it will disappear when the headlamp is switched on. If the headlamp does NOT dry out after having been switched on for 15 minutes, check the build date of the headlamp. If the build date is between 01.08.98 and 30.09.98, install a new headlamp cover flap.
NOTE: If there is a concern, both headlamps must be removed. Defective headlamps must be renewed and reworking may be necessary. When the headlamp is installed, the number of mounting points must be reduced.

1. If the headlamp assembly is defective, install a new one.

1. NOTE: Sometimes the guide pin on the plastic headlamp lens is still present on a new headlamp assembly.
   Cut off the guide pin flush and de-burr as necessary.

1. Remove the headlamp levelling motor from the faulty headlamp assembly and install it on the new headlamp assembly. For additional information, refer to Headlamp Leveling Motor - Vehicles Built Up To: 10/2001 in this section.

1. NOTE: Sometimes there is no hole in the bracket of a new headlamp assembly.
   Do NOT install the retaining bolt any more.

All vehicles

1. NOTE: Fix the headlamp assembly in place using the locating pin.
   Install the headlamp assembly upper retaining bolts.
   • Connect the headlamp assembly electrical connector.

1. Install the radiator grille.

1. NOTE: Fix the headlamp assembly in place using the locating pin.
   Install the headlamp assembly lower retaining bolt.

1. Install the fender splash shield lower retaining screw.

1. Adjust the headlamps. For additional information, refer to Headlamp Adjustment - in this section. For additional information, refer to Headlamp Adjustment - Vehicles With: High Intensity Discharge Headlamps in this section.

you are talking aftermarket headligth covers? , the head lite itself cant not be taken appart, your best bet is to drill a small hole in the lower part ofthe headlight so moisture can be release, this will help but in the long run you'll need to replace it

No Dear No Other Way. IF You Thinking To buy A Car Then Dont Think To Go For A New Lens Just Buy That.Thanks

Condensation is deemed to happen if ambient temperature is lower than inside the headlamp and humidity inside of headlight is too high.
From a headlight design perspective, you cannot lower ambient temperature. Not much can be done with temp inside headlight either. However, humidity levels on the inside can be reduced. Most designs usually have 2 or 3 air vents to keep humidity below condensation threshold levels.
This might sound complicated, but the phenonomen is exactly the same as windows in a winter home and humdity levels inside. Too much showering, and bathroom window fogs up. Venting will reduce condensation.

You might wonder why headlamps are not designed to be 100% air tight, so that no humidity enters? Well, that would be in an ideal world with no heat losses in bulbs. As the headlights goes through continous warm-cold-warm-cold cycles as you turn light on and off, the air and plastic will expand and retract. This creates pressure changes, which will move a slight amount of air in and out. So instead of forcing the air to be inside, air is moved through controllable passages, so that minimum of road dirt will enter.

If condensation disappears within a week. Moisture can have been sucked up in high pressure wash. This should normally dissapate within a week by itself.

If condensation amount stays constant, then there is crack(s) in headlight that lets in water. This can be siliconed, depending where the crack is, or a replacement headlight should be considered.

They make kits that you can use to clean out the headlamp assemblies. If the condensation is building up, the vent tubes on the headlamp assemblies may be clogges. These vents are usually small rubber tubes coming from the back or bottom of the assemblies. Make sure they are clean and free of obstructions

Had this problem in my 05 DHS - Cadillac replaced the assembly under warranty.

UNFORTUNATELY THE ONLY THING THAT CAN FIX THIS PROBLE, IS TO REPLACE THE HEADLAMPS. I'VE WORKED IN BODY SHOPS FOR 8 YEARS AND I HAVE FOUND NOTHING TRUELY FIXES THIS PROBLEM.