A Waterbury man has been arrested for allegedly selling drugs throughout Danbury.  Police launched an investigation weeks ago into citizen complains about Ramell Crawford.  Members of the Danbury Police Special Investigations Division and the DEA Taskforce set up surveillance on Morningside Avenue in Waterbury yesterday morning and followed Crawford's BMW to Danbury.  He was taken into custody at the corner of Liberty Avenue and South Street.  Police searched his car and found a substantial quantity of illicit narcotics packaged for sale, drug paraphernalia and U.S. currency.  Police got a search warrant for his Waterbury home and seized several more items including a loaded pistol containing a prohibited large capacity magazine and additional narcotics.  Crawford was charged with possession of a controlled substance, possession with intent to sell, possession of drug paraphernalia, prohibited possession of large capacity magazine, and manufacture of a firearm without unique identification number.