So recently I did a retrofit with my fog lights. I retrofitted a set of projectors from a BMW x3 into the light housing and all is good, except I get condensation when I fire up the head lights. The temperature difference doesn't equalize fast enough for the condensation to dissipate quickly. Once the lights are off, the condensation disappears quickly.

-I have tried fully sealing the housing and that didn't work because the hot gases couldn't vent off.
-I tried adding a tube for venting purposes on the top, was better, but didn't get rid of it entirely
-I tried adding an additional vent on the bottom of the light housing too and that's just as effective as the single one up top.

I am stumped.... Any retrofitters able to shed some light? *no pun intended*

TIA

 

Just get some real LED fog light housing and call it a day. They are actually designed as fog lights instead of adapting low beam projectors into fog lights. They are not terribly expensive either

 

The projectors I have were fog lights from the x3. I find the leds aren't as bright as the HIDs. They just don't shoot quite as far

 

I'm not sure if this would work with your projectors, but the easiest fix is the hair dryer. It doesn't always work either. On a normal sealed fog light, remove the bulb, shoot heat from hair dryer into it for 5 minutes or so, then reinsert bulb/seal light.

 

I only have issues with it when it first fires up for like 30 minutes. As soon as you turn it off, the condensation will evaporate really quick and totally dry out on its own