Guys, I picked up one of these recently and it comes with a plug and play radio harness and can bus etc but part of the installation calls for a particular wire to be connected directly to a particular fuse within the fuse box.

But I'm just wondering if these are universal fitting instructions and would the plug and play radio harness over rule the need to connect directly to the fuse box?

It's one of those dynavin style units.

Thanks.