are you talking about the side markers or the bumper lights?
are you talking about the ones below the headlights in the pic, or the ones next to the wheels?
if you are talking about the side markers, theres not too much work, but if you dont feel comfortable cutting your fenders, i do not suggest you do this. either have a professional install them or get a friend with a steady hand. i did mine myself and it took probably about 4 hours, but that was mainly because i didnt cut enough so it took me a while to file down the edges