I am new to this forum and will take advantage of my first post to submit a tutorial. I was looking for it to no avail and thus am posting it here so that people can see what it takes to do this job when you have a pre-wired car.
Thank you for pushing me in the right direction to:
This is a 2000 Focus ZTS.
It has the harnesses for fog lights behind where they are supposed to be in a fog lights-equipped focus.
I went to the junkyard and found 20+ cars to pick parts from.
What I got (and is needed to make it work):
-Fog lights and their fasteners and bulbs
-Fog light center grill (shorter than the non fog lights grill)
-"Fog light option" Headlight switch (the knob can be pulled to actuate the fog lights as needed)
The whole thing cost me about $30 from that same junkyard.
First I removed the factory grill, then installed the fog lights in their alcoves, the bumper has areas that are pre molded for installation. Then I installed the center grill.
I hooked up both of the harnesses to the fog light assemblies.
Then I added one of those black relays on slot R13 in the main relay box under the hood:
Then I opened up the dash around the factory headlight switch to the left side of the steering wheel, checked that the factory headlight harness had that thick black and green wire at pin 83b (to see it click taht link and scroll down to post#10 to the picture of the harness: http://www.focusfanatics.com/forum/showthread.php?t=229873
), it did so I hooked up the harness to my new "fog light" headlight switch and bolted the switch back to the dash, then bolted the dash back together:
This is my result, first pic, one fog light was not working, I ended up wiggling the fog light harness a bit on that non working side and it worked