My husband is not an electrician and was able to switch out these lights for our old ones.  
We bought 5, though, and one came broken.  Wayfair refunded our money and I bought a replacement.  Just a word to the wise, make sure to get nice looking bulbs.  If you get the standard CFL looking ones, lanterns will not look as nice. 

Pros: Very fancy
Cons: need fancy bulbs