I'm just about finished making my new darkroom. I have two Kodak type A safelights (bullet type) with the screw in style base (Edison type base). The darkroom has been newly wired with the appropriate new receptacles. If I screw a bulb into the receptacle it works as you would expect. When I screw in the safelight it does not work. I've tried slightly extending the centre electrode of the receptacle to make sure that it is making contact with the male side of the safelight and have done the same with the female side inside of the light housing in order to make certain that adequate contact is being made with the bulb. The problem occurs with both lights. Thanks in advance for your thoughts and suggestions.