I'm really considering buying an aftermarket head unit from Pioneer (this one:
https://www.pioneer-car.eu/eur/products/dmh-a340dab) which I intend to install into my Golf Mk5 (2004). Now, I already know that I need to buy a faceplate for my dashboard, but what's gotten me concerned is that I've heard that aftermarket units can cause unwanted battery drain, even when the key is out of the ignition. I've made some research and found out that this can be avoided by installing a canbus adapter/simulator or modifying the radio fuse to switched. In some cases this isn't even necessary. That's why I need to know if this adapter will be enough:
https://connects2.com/Product/ProductItem/CT20VW04
