I am looking to change my old wall light (1 light bulb) which is upstairs on the landing. It's 2 way (1 gang switch upstairs landing, 1 gang switch downstairs in the hallway). There are 2 cables coming out of the wall. Each cable has 1 red, 1 black, 1 green/yellow wire the red wires from the wall are taped together. The black wires are connected on the left and right, the green/yellow from both cables are sleeved together and connected to the middle connector. I'm not entirely sure how the green/yellow is connected with the silver ring on it. The light fixture wires are sleeved in a white material and the wires are plain silver and connected to the same connector as the black cables. How do I connect the new light's wires to the old wire colours. https://photos.app.goo.gl/D9Bxtzhmb8UVRYsA9 Hopefully you can see the pictures of the wiring in the link.