Considering these are after market back up lenses I was pretty pleased with the overall quality. My lenses came completely assembled. The bulbs were even installed. The installation took about 2 hours per light. My Mustang didn't come equipped with B/U lights, so I had to do some cutting and spend some time under the dash locating the wiring from the neutral safety switch. The only negative issue was the size of the rubber grommet that was molded on the wiring. The grommet is about a 1/4" too small to fit snug in the factory cut out on the inner rear lower portion of the quarter panel. I had to add some clear caulk to ensure a water tight fit. Overall, very pleased!
The spring is too hard and fixture are incorrect and it is next to impossible to put the bulbs in.