Hi there wondering if you can help i have a 2 gang light switch one which works the kitchen and one that works the outside light. The kitchen works fine yet the outside switch does not switch it on it seems that tere is no power going to the light outside as i have tested it with a meter can you tell me how i can find out if the outside light wires are connected to the light switch ie what colours sholud they be and where do they go in the double switch