DISCLAIMER: I am not responsible for any damages done to your vehicle if you follow my tutorial. Please proceed with this installation carefully and at your own risk. If you do not feel like you can do it, please consult a professional. Again, I am not responsible for any damages done to your vehicle if you follow this guide.
I installed Spyder fog lights using the factory fog light wire harness, factory relay, and with the after market switch.
I had some issues where a screw rusted in and I couldn't take off the entire front bumper.
I also decided to not have the fog lights turn on when the lights turned on. I wanted to be able to do it when I wanted to.
taswon's guide on Toyota Nation: http://www.toyotanation.com/forum/325-10th-gen-corolla-2nd-gen-matrix-exterior-forum/395201-corolla-2010-le-2009-10-gen-fog-lights-install.html
Relay (Part no: 90080-87010) sold by Forest Drive Auto Parts: http://www.amazon.com/gp/product/B00KTGDDS6?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00
Spyder Fog lights sold by Amazon.com : http://www.amazon.com/gp/product/B0076PKV4W?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
