Switch top & bottom fit together and rely on compression of 2 parts to seal switch Please ensure LIVE wire is connected to either end of rocker switch assembly only, if using for DC then negative wire must be run in tunnel under rocker switch, if using for AC both Neutral and Earth wires must be run in this tunnel space (If wire ends are soldered together for neutral and earth then please also ensure join is fully As with all electrical installation work - only undertake if you are confident to do so, and never exceed stated maximum ratings for this item. If in any doubt consult a Any cable/wire or other items shown in pictures are not included with this item - ** Telling you as it is - In our opinion, due to the nature of the plastic used in the body of the switch it does appear to