Got my O2 sim installed and it's for real. I take my time with wiring projects to get them right and make them look clean so it probably took longer than most. I will say that finding the right wires was a pita. This attached may help future installers as their instructions are generic. The way mfgr's hide all the wiring nowadays it was difficult to find a keyed +12v. I stared at the fuse box for a while trying to figure out how to tap into an unused slot but it was more work than it was worth.