I recently installed an aftermarket fog kit on my 2012 cruze. they are wired and working. however i don't really like the switch that came with it which I have run the firewall and mounted on the dash. how easy is it to just buy the oem headlamp control switch that has the fog button. I keep seeing posts about literally just plugging it in but it can't be that simple. my car did not come with fog lights so therefore it's not pre-wired for them? i wired the harness that came with the kit. there is a 15a fuse in the fog lamp slot but I tested it and it is not hot. is it even worth doing this and how would I go about installing the oem switch what all additional wiring/work would I have to do?