Replace original Opelradio with its own radio

Moin, I recently bought an Opel Combo – C – CNG and wanted to install my “old” radio from the last car. After previous Googlen I had to find out (which is hopefully right) that on newer Opel vehicles no more ignition plus, but was replaced with a CAN bus. However, a suitable cable from Amazon and Co. should cost about 70€, which I find a bit happy. After that I found at Amazon a “conversion kit complete”, consisting of the brackets for The Opel Radio, a frame to adjust the size of the DIN shaft and a “simple” connection cable. Because the Zündplus can also be fetched from the cigarette lighter if necessary or not? My question would be, has one of you ever done this? I think normal, with some craftsmanship, some experience in the installation of car radios and of course the equipment should be able to do this, right? Michael PS: I know that this is actually only available from Combo D, But I thought it was best to fit in here, which hopefully is OKay.