Ignition plus/Permanent plus Peugeot 206

One or the other might know the problem, that with some vehicles, as with the Peugeot 206, the pins for ignition and duration plus are switched. Now it’s the case that I bought a 206 and now wanted to fix this problem. So I expanded the (non-original) radio, and I had to be surprised to find that the previous owner already tried to fix this problem. He has the cables for ignition and duration plus (on the cable from the radio, not on the car) by snowing through This has also been properly connected and isolated. Of course, that’s what iridized me and I once measured the plug from the car with the multimeter and found that on the two plus contacts, only current depends on the ignition. That’s not normal, is it? What could this be? How can I solve the problem? Maybe from another source put the permanent plus to the radio? If yes, from where? Thank you very much for helpreic He suggested solutions! Edit: Backups are all in order.