Question about City light/fog light write-up...

[Pestilaence]

Hey guys... I was browsing the DIY threads and came across a question concerning one of them. It's the City light/ fog light mod that allows you to use your existing fog lights as city lights. Here's the thread..

http://www.audizine.com/forum/showthread.php?t=189119

Ok, so my concer is this; How exactly does this work? I figured the bulb that is in the fog light housing is tinted yellow, therefore making whatever light comes from it... yellow. If the bulb is not tinted yellow, then is there only a certain amount of voltage going to the bulb, and somehow the amount of voltage makes it that color? I could see that maybe by doing this mod that we are providing the fog light bulb with more power, therefore giving it a different color, but I am still unsure. I also followed the link that was in that thread, and the original poster of this idea mentioned using the VAG-COM... which I am unfamiliar with. I'm guessing it allows one to tap into the ECU somehow.

Either way, I'm sort of confused about this write-up, but it does seem kind of cool. Could someone please elaborate for me? I'm a noob when it comes to things like this. Thanks!

[akaEsCo01]

Eddie Man's thread is good, but I prefer this one, No Cutting Fog Light Mod. Unless you have an 02, you will need this step. The rest is done by recoding your lights with a Vag-com which is a cable and software that lets you talk to your car. You can get one on eBay to do this mod or you can get the full version from Ross Tech

As far as the yellow fogs, get yellow bulbs, yellow lamin-x for the fog lenses or 3000K H11 HID kit for the fogs.

[Charlescrs6]

Would this work for my B6 which doesn't have the "auto" function on the headlight control.