This Sylvania/OSRAM kit contains very high quality components and should not have a problem habitating in your engine compartment provided you keep it out of direct contact with the hottest components.How this installs is, in theory, pretty simple:There is a central processor about half the size of a deck of cards that has to be screwed or strapped down somewhere in the engine compartment. From this unit are long power wires that must get connected to your battery terminals, and one wire that gets clamp-spliced into your existing headlight wire. It is this wire that controls whether the LEDs are powered at 100% (daylight, no headlights on) or 50% (headlights on - presumably night). Out the other side is two sets of wires that will securely clip into your lamps once you position them.You then need to pick a place to mount the lights, with or without the mounting bracket that is provided. It gives you several options, but depending on your car, it could be tricky getting in there with a screwdriver to mount the bracket/lamp.I tested the wiring and the product by first hooking it up outside of the car to a spare battery. It worked great, looked great. Touching the green wire to the + terminal instantly dimmed the lights to 50%, or raised them to 100% when removed.So - great kit - everything is included... except perhaps mechanical expertise and magic fingers. That's where I went bad.These lights would have looked AWESOME on my 2011 Mustang and there is an empty cut-in place where they would mount almost perfectly (although they might be a little beyond the legal 10% angle). Problem is, with my bad back and the Mustang's low and heavy body work, I'd need a lift and a whole lot of patience and dexterity to get in there to mount these things. Add to that that the Ford wiring harnesses are so tightly wrapped and in a place with so little wiggle room, that I am not at all confident I could get in there. It looks like it would be even harder on my 2012 Focus, so these will be demoted to my third choice - the Dodge Ram where it appears installation will be pretty easy due to all the extra space in the engine compartment.Check your car - if it looks like you can get access to the headlight wiring and have a good and accessible mount point for the lights, you'll love this quality kit.