So I have 6 H1 fog light halogen bulbs that I have tried and all of the bulbs work on the passenger side, but none of them work on the driver side.

Could it be a problem with the fuse? I thought when the fuse goes bad, both sides won't work?

I also noticed a loose cable that I have no idea where it goes, I think it's for grounding? but would it cause the light to not light up? I don't have a picture right now because my phone corrupted the file for some reason.

Anyways, it fits a fog light perfectly (which I tried x_x, was trying everything possible.)

 

I would suspect it's that dangling wire. Look for where it was supposed to connect to.

 

Anyone know of any close up pictures of the back of the headlight with the cables showing so I can tell where to plug that dangling cable back into?

 

So after a couple hours of looking for pics of the wiring, I found it and edited it to circle the exact cable I am talking about:

 

I dunno how familiar you are with wiring, but I would get an incandescent 12v bulb >35w to test the output of the ballast by using the part of the wires that plug into the headlight.
You have a few areas to test:
The wires that plug into the headlight.
The output of the ballast.
The input of the ballast.
The fuse to the headlight.

In no particular order. And this includes canceling out both positive and ground connections separately.
And my best electrical advice:

 

That wire your talking about is a ground to fogs inside the headlight. I had the same thing happen when I swapped my fogs to 3ks. if you feel around you'll feel a little tab poking out which is where it connects to. Open up the working side and feel around for the wire so you can get an idea of where it goes. Or you can take off your tire with the car jacked up and look into the housing and you'll be able to see it

 

I have no experience at all in this. I've only done one simple wiring for my footwell lighting.

I've also noticed that ever since this has happened (non-working fog on one side), the side with the non-working fog light also has a dimmer HID bulb. Also when driving over a huge bump, it would cause a flicker. (not sure which side the flicker was from though.)

**and to the above post**

I had suspected that it was the tab, so I did already try connecting it to that metal tab but no luck!

maybe i have to flip the black wire 180 degrees? or does it not matter? O.o

maybe I'll give it a try again, because I was in a hurry and probably messed something else up in the process.

thanks for the confirmation though.

 

+1, it's a PITA to work around with the wheel still on.

 

So it ended up being a combination of a few things...

Since I "accidentally" yanked the black cable off the grounding point, the connection became sort of "widened" and it didn't make a completely good contact with the metal piece. Had to squish them back together.

The black rubber part also became loose after that incident and the metal piece would slide into the little area above the metal connection in the black wire. - I took the headlight off and it made my day 10000x easier, pulled the black rubber surrounding back and connected it firmly.

I saw everything I had to do with the headlight assembly out, plugged it in and it worked after trying my collection of fog light bulbs again.

 

Glad you figured it out!
You are now the go-to guy for headlight questions