98 Trans Sport... Headlights have moisture on the inside!!??

[woscarr]

Ok presently my headlights are sitting on my kitchen table. I noticed that someone has already did the silicone around the edge of the headlight (where the front half and rear half of the plastic headlight join together), yet there is still a excessive amount of moisture on the inside.

I plan on washing them, removing the old silicone and drying them out completely before re-applying more silicone.

I have examined them thoroughly and cannot see any cracks anywhere and the plastic lens is still very clear.

Any suggestions or recommendations will be greatly appreciated.

[LMP]

Common story. Usually there is a breather tube that allows for expansion and exhaust of warmed air..of course cooling will contract the air and the air that enters - through authorised breather or forced ones - will contain what comes with it, moisture. I have seen replacements without the breather, but then pressure and vacuum build up under temperature changes will force air through any avaliable crack or seal, like the bulb socket. THis is the problem since we have been reaped of the true glass hermetically sealed "sealbeams"; then less than 10$ would procure a new filament, a new reflector and a new lens all together.
I think the environment in which the car is used will impact of the severity of this phemomenon but from a physical perspective, it is unavoidable..unless the breather is fitted with a dessicant that would be maintained periodically (just like large powerplant transformers and their cooling oil tank connected to atmosthere through a dessicant pot that changes color when saturated with moisture) . But of course, blocking otherwise unwanted cracks of seams is an absolute requirement, and alas, there is no magic,... just insist ..

[woscarr]

Ok I cleaned all the old silicone and glue off, ruffed them up with some sand paper and then re-did them with some "automotive goop". Let them dry indoor's for about a day.

Their back on the van now... Time to see if it work's ? Time will tell !

After some searching for the best possible stuff to use, I found "Automotive Goop". The stuff seems to bond very well with the plastic headlight material. I did some testing with it... The stuff cures almost like GB Weld.. only with some flex to it... look's promising.

More at 6...