A method of manufacturing a plug housing (6; 106) and a lever (10; 110), the method comprising: molding the housing (6; 106) and lever (10; 110) in one mold, the housing and lever being separate parts; extracting the housing (6; 106) and lever (10; 110) from the mold; and moving a mating end of the lever (10; 110) into position relative to first and second mounting portions (40; 140) of the housing, characterised in that: the lever comprises a first lever arm (80; 180) connected to the first mounting portion (40; 140) of the housing by a first web (93; 195), the first web positioned between a central hub (84; 184) of the first lever arm and the first mounting portion (40; 140), to maintain the first lever arm (80; 180) in an initial position relative to the first mounting portion of the housing when the housing and lever are extracted from the mold; the lever comprises a second lever arm (81; 181) connected to the second mounting portion (40; 140) of the housing by a second web (93; 195), the second web positioned between a central hub (84; 184) of the second lever arm and the second mounting portion (40; 140), to maintain the second lever arm (81; 181) in an initial position relative to the second mounting portion of the housing when the housing and lever are extracted from the mold; and the step of moving the mating end of the lever (10; 110) into position relative to the first and second mounting portions (40; 140) of the housing comprises moving the central hubs (84; 184) of the first and second lever arms (80; 180, 81; 181) towards the respective first and second mounting portions (40; 140), overcoming the resistance of the first and second webs (93; 195), thereby breaking the connections between the housing (6; 106) and the lever arms (80; 180, 81; 181), as the central hubs (84; 184) of the lever arms are moved into engagement with the mounting portions (40; 140). molding the housing (6; 106) and lever (10; 110) in one mold, the housing and lever being separate parts; extracting the housing (6; 106) and lever (10; 110) from the mold; and moving a mating end of the lever (10; 110) into position relative to first and second mounting portions (40; 140) of the housing, characterised in that: the lever comprises a first lever arm (80; 180) connected to the first mounting portion (40; 140) of the housing by a first web (93; 195), the first web positioned between a central hub (84; 184) of the first lever arm and the first mounting portion (40; 140), to maintain the first lever arm (80; 180) in an initial position relative to the first mounting portion of the housing when the housing and lever are extracted from the mold; the lever comprises a second lever arm (81; 181) connected to the second mounting portion (40; 140) of the housing by a second web (93; 195), the second web positioned between a central hub (84; 184) of the second lever arm and the second mounting portion (40; 140), to maintain the second lever arm (81; 181) in an initial position relative to the second mounting portion of the housing when the housing and lever are extracted from the mold; and the step of moving the mating end of the lever (10; 110) into position relative to the first and second mounting portions (40; 140) of the housing comprises moving the central hubs (84; 184) of the first and second lever arms (80; 180, 81; 181) towards the respective first and second mounting portions (40; 140), overcoming the resistance of the first and second webs (93; 195), thereby breaking the connections between the housing (6; 106) and the lever arms (80; 180, 81; 181), as the central hubs (84; 184) of the lever arms are moved into engagement with the mounting portions (40; 140). the lever comprises a first lever arm (80; 180) connected to the first mounting portion (40; 140) of the housing by a first web (93; 195), the first web positioned between a central hub (84; 184) of the first lever arm and the first mounting portion (40; 140), to maintain the first lever arm (80; 180) in an initial position relative to the first mounting portion of the housing when the housing and lever are extracted from the mold; the lever comprises a second lever arm (81; 181) connected to the second mounting portion (40; 140) of the housing by a second web (93; 195), the second web positioned between a central hub (84; 184) of the second lever arm and the second mounting portion (40; 140), to maintain the second lever arm (81; 181) in an initial position relative to the second mounting portion of the housing when the housing and lever are extracted from the mold; and the step of moving the mating end of the lever (10; 110) into position relative to the first and second mounting portions (40; 140) of the housing comprises moving the central hubs (84; 184) of the first and second lever arms (80; 180, 81; 181) towards the respective first and second mounting portions (40; 140), overcoming the resistance of the first and second webs (93; 195), thereby breaking the connections between the housing (6; 106) and the lever arms (80; 180, 81; 181), as the central hubs (84; 184) of the lever arms are moved into engagement with the mounting portions (40; 140).