Review for Simple Wikipedia Search EN by TON1958
Rated 5 out of 5 stars
Plain old school search engine for the address bar and search toolbar. It appears in your list of search engines.
One suggestion: add the language to the icon so that one can distinguish the many W-icons under the address bar, when one has Wikipedia search engines in different languages.
To create your own collections, you must have a Mozilla Add-ons account.