In the days when car electrics were relatively straight forward I fitted them to my cars, I wouldn't even entertain the idea now, modern auto electronics are far too complex for my basic DIY skills. Unless you really know what you're doing I'd leave it to a professional.
If I was you I'd consider a Ghost security system instead, search on here for more information, top right of your screen.
If I was you I'd consider a Ghost security system instead, search on here for more information, top right of your screen.