I thought so, I exchange now finally the original radio against what "better". I then got the JVC KD-R531E installed and everything went well as far as problems. Apart from the matter of the switching on and off via the ignition. If you build a simple him, without changing anything on the cables, the radio goes on each electric "action" (whether it is simply the unlocking by remote control, or the trunk open ... no matter) to ... moreover, stores he simply no transmitter. If you exchange the yellow to the red cable to the connector between the radio and car, this phenomena no longer occur, but one has but the radio ALWAYS on and off manually. Totally annoying! For this reason, I have (even Peugeot directly in Munich) phoned about 10 Peugeot workshops ... no one could somehow help - except: 'Buy' nen Blaupunkt - so should go now "...
In short: This adapter is precisely this function again present !! Finally: D What a gain in comfort.
Now for the secondary function: the steering wheel remote control. All functions of the remote control, the one was used by the factory radio, work again perfectly with the adapter. More actually there is to it.
I would definitely buy the adapter again ... if only because of the power on / off via the ignition.