Hello, everything worked wonderfully-thank you

You need the right cable set and antenna adapter. This is not exactly cheap, but recommended if you also want to get steering wheel control, etc. With a little googling you will find it (cable set+car type+Pioneer xy). Since I didn't want to get this stuff from abroad, I found it at car-media Switzerland. Price and service were also good there. I might also have to get a 2-DIN bezel or adapter for the new radio slot so that the device fits perfectly in the car.

A Can-bus adapter is needed that fits the vehicle. In my opinion, it is not easy to find the right one if you are not a specialist and also want to use the steering wheel remote control, for example. I would take a look at www[dot]radioblenden[dot]ch. Or go to a garage and ask for advice.