Absolutely. Why go to all of the trouble to replace fixtures with removal, re caulk and rewire when you can just plug in new bulbs? I plan to do the same thing as soon as at least one of my bulbs go out. I did replace the entire tail light assemblies last year with the Bargman set and have not regretted it but that was because the OEM's were the small cheap ones many manufacturers use and the sockets were not the holding the bulbs securely. Good luck.
RichH