These headlights make my 2005 Mazda look like new. Clear, shiny and new.Assembly is time consuming, so make sure you have ample time to replace these (a couple hours). Replacing the headlights consists of completely detaching the bumper - yes, completely. When doing so, remember where each screw goes because they are not all the same. Take pictures, label them - do whatever you can to remember where each specific screw goes.Tools you will need:- Phillips screwdriver- Thin flathead screwdriver (for removing screw casings)- 10 mm socket wrench- 4 small wire clamps (see picture)- Electrician's tape for organizing wiresAssembly is easy - exactly like the original headlights have been assembled, but with just one more step. The halo ring is designed to light up with the running lights/blinker. The blinker light consists of a red, black, and blue wire. To hook it up, all you need to do is clamp the red halo ring wire with the red wire on the blinker light, and the black halo ring wire with the black wire on the blinker light. Red with red, black with black. See picture. Don't worry, the halo won't start blinking (unless you were to hook the red wire to the blue wire)The power converter box for the halo ring has an adhesive backing to it. I just assembled it to the top of the wiper fluid compartment on the passenger side, and on the black compartment on the driver side.Overall, awesome looking! You may have to adjust the level of the low beams. Mine came and only shone about 15 feet in front of me, so I just adjusted them.If you need assistance in taking off the bumper (finding where the screws and bolts are), or if you need help adjusting the low beams, I found my help from YouTube.Enjoy and have fun!