Ok maybe not a new thread, but couldn't find what I needed to know. The radio in my ducato based motorhome is available without the ignition switch turned on. This in itself is not a problem, however when I fitted my cd changer( works through the aerial on rf signal) it drained the battery overnight because I couldn't find a switched live on the radio plug. I need to be able to isolate one of the live cables, I think its the red one, the yellow is always live. Help anyone?

you can get a ignition live (orange) from the ignition switch if theres not one at the radios connectors.