Remove ALL of the bulbs and wiring from the headlights. Not doing so will cause severe damage to your headlight housings, forcing you to purchase yet another set of headlights.
Heat your oven to 250 degrees and sit a piece of WET cardboard on top of a plate. *Note - placing the headlights in the oven are to speed up the evaporation of the water. If you are not comfortable with this step you can place the headlights in direct sunlight, but it will take longer for the water to evaporate.
At 250 degrees place the headlight on top of the cardboard for 3 min (Note: It is NOT necessary to pre-heat the oven for this process).
Remove the headlight from the oven (careful, it will probably be quite hot) it and push your Mustang headlight back together as much as you can. Our headlights are sealed front to back, so push as hard as you can on the front and back housing to create a better seal. Try your best not to have any openings between the housings.
Once pressed firmly together, take some silicone RTV sealant, which is available at any hardware store, and spread it along the line where the housings come together. This step will cover any open holes left over from any silicone not drying in place completely.
Let the freshly applied silicone dry before re-installing the headlights into your Mustang.
This process does melts the silicone glue that the factory used to seal the housings. Sometimes the glue has open spaces left over after being sealed at the factory. As the silicone glue dries, it re-hardens and is pressed tighter between the two headlight housings, creating a stronger bond. Adding more silicone glue is necessary to cover any other possible gaps in the headlight housing so that another leak does not develop
You will also want to check the seals around the Mustang headlight bulbs as well, to make sure there is no extra air leaking into the headlights from the bulb housings.
These guys are great! Customer service is absolutely top notch. Their pricing points are spot on and every month they off some sort of special on multiple parts. Not only that but the staff will educate you on the parts and their customer reveiw option of every part has been a huge help in determining the validity of each part you buy. American Muscle is the perfect example of what a full service parts distributor and custom tuning shop should be. I'm just glad they are Mustang exclusive!
All my other cars were all-wheel drive, my brother had an 04 cobra and i wanted to compete and beat him with naturally aspirated so i went with a mach1 - and beat him. Now he works here too! I got lucky and was able to find one of the...
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