there are many ways to tell theyre not oem:
BLACK is not an oem interior color code therefore the switch wouldnt be black. it would be either light or dark grey. the oem wiring only consists of two parts... the fog light harness and switch harness. no red connector piece. and i believe oem units only come with clear lenses. also, the connectors for the fog lights are different i think. you could install that kit on your car. Im 90 percent sure you have a kit that the fog light harness will connect to your battery and from there include a fuse and relay, then two fog light connections, a ground, and connection for that small red wire.
The red wire will then go through the engine bay, through the firewall, and connect to the switch harness. the switch harness will connect somewhere on the fuse panel, to a ground, and to the switch itself.
I have not seen installation instructions for this kit.
but again, the only part of the installation that should be different is the wiring... which happens to be(IMO) the easiest part.
The BEST thing to do would be return that kit and get one that is OEM from a reliable source. you spent 70 + shipping for this kit... right? well you can get an OEM one (better quality and easier installation) for probably 130 + shipping. It's all about whether you want the genuine product or not. If it all just sounds too confusing... keep the kit and have it professionally installed and call it a day. However, if you plan on doing other mods to your car... there are much harder things than this to do. Just a forewarning.