View Full Version : DIY: CityLight with Fog Mod

Eddie Man
03-11-2007, 11:58 AM
I know this is a repost but I wanted to put my spin on it...
First of all, HUGE props to "FatAuto" for figuring this out. For reference >>> FatAuto's AW Link (http://forums.audiworld.com/s4b6/msgs/333541.phtml)

Here's how I did it and I've just include lotso pics for people who like pics [:)]

1. Identify wires (Position #1 & #2) on the light switch harness

2. Cut Wire #2. Allow for ample wire for step #3 & #4 below.

3. Strip Wire #2.

4. Crimp on Male Wire Tab Connector to #2 Wire.

5. Use these style wire tap for a fool-proof tap. The best wire taps money can buy, IMHO.

6. Crimp on Wire Tap onto Wire #1. Crimp far enough downstream to allow for the ease of Step #7 below.
FYI, I barely left enough room for mine, but for you guys, go further downstream (See Step #7).

7. Connect up Male Wire Tab to Wire Tap & Tape raw end of Wire #2.

8. Done, in 5 minutes time. Fogs w/CityLights Mod...
Whooot !!!!

Original Thread w/ Discussion: http://www.audizine.com/forum/showthread.php?t=124446

08-21-2008, 05:57 PM
is this feature with the parking lights or as day time runing lights?

08-21-2008, 07:16 PM
i wasnt sure wat citylights were but i searched around and found out i dont have them so how do i make this work for my car. (03 a4)

09-18-2008, 04:37 AM
DOES anybody know if this will still allow the fog lights to power on when you Unlock/Lock the car with the remote???

09-18-2008, 04:44 AM
Will this allow the fog lights to still power on when you Unlock/Lock the car with the remote????


11-14-2008, 11:37 PM

Can you please explain what exactly it is that this mod does ?? Does it allow you to switch on your fogs, even if your park lights are not switched on ?? Or does this mod permanently switch on your fogs as daylight driving lights ??

11-27-2008, 08:26 PM
Can you do this with out the VAG tool ?

Bit of a Newb to the audi world.

11-28-2008, 07:58 PM
Do you need the VAG tool for this?

01-12-2009, 01:00 PM

02-19-2009, 07:44 PM
that looks sick..but if i do that will i still have fogs for low beam use? and what do you do with the other end of the wire you cut?

03-14-2009, 07:01 AM
i just found this thread and i'm doing it TODAY haha

03-24-2009, 07:17 PM
Great DIY, just completed it, took 5 mins max. Love the site people keep the DIY post coming.

04-07-2009, 07:29 PM
Very exact tutorial. Great pictures. Thanks![up]

04-21-2009, 12:57 PM
would this be the same for halogen set up?? to run fog lights with parking lights??

05-04-2009, 03:27 AM
I did this on my B7 (2005.5) and it works, however when my lights are set to "auto", the green light behind the "auto" text flickers. Is this a simple loose or poorly connected wire problem or something else?

Winners Eat Pho
11-15-2009, 05:12 PM
Wonderful! This weekend it will be mine!

04-25-2010, 03:57 PM
Did you have to VAG your car to RDW before splitting/jumping the wire, like FatAuto did?

06-27-2010, 08:24 AM
I know I'm reviving a thread that's over 3 years old [o_o], but I'm not the most electrically inclined person. I read the below from Eddie Man, but it doesn't mention anything about having to VAGCOM, in order to getting the fogs to work separately....the post from Fat Auto does. Do you guys know if I can get the fogs to work separately, WITHOUT Vagcom'ing it?

Thanks for your help in advance!

03-17-2011, 09:08 AM
Looks like its a mod for US cars only, I assume ROW has this as a standard feature?