All car radio's require two fused circuits Bob, one permanently live (fuse 17) for memory. Even MMC accomodate for them
BTW the only error I have found in the 2006 -2014 Classics parts book concerns the fuse labelling in the fuse box depiction of the later chassis loom. Fuses numbered 1 - 10 are correct but in the left hand row they start with fuse 20 at the top when it should be 11 dropping to 20 at the bottom. Actual wire locations are correct.
