I bought 2 new metal spotlight type lights for my house to replace the existing plastic ones. The first plastic one i removed had 3 wires, live neutral and earth which were pretty simple to connect the new fitting to. The second one has live, neutral, and three other red wires that are connected together in an empty choc block, and there is nothing going into the earth connection. I am worried that because the new fitting is metal, it has to be earthed. Both lights are in the same room and run off the same switch. I don't understand why they have different wiring configs.