The present invention relates to an improved system of interconnecting ballasts and fluorescent lights; more specifically, for a ballast whose circuit is duly insulated and housed in a casing, is fitted with prongs which are connected to the coil and capacitor by means of wires. One or more receptacles are provided into which the prongs are inserted. A protective cover over the receptacle(s) has a catch at one end into which is inserted a retaining clip to secure the cover in place. The ballast circuit has cable wires running from the receptacles,firmly mounted inside the casing , to the fluorescent lights.