Edit: added more details @RagnarKon I've watched your videos and read through pages of your responses. You're an awesome human for all the info you have provided. Thanks a lot.
I have a 23 that has the sub non b&o. I swapped out all speakers, added a key200.4 and messed with forscan. I want to...
I was able to use a fuse tap on the heated steering wheel(37). Given it's high amp rating and I don't have it as an option I felt good about it. It comes on with ignition.
I had the same rings, annoyed me. I tried stoners, white vinegar, clay bar, razor blades and newspaper nothing worked. Finally got rid of them using griots glass polish then applied ceramic coating