The green wire to the radio harness on my 1990 Cooper is showing no power (with multimeter). Purple wire (permanent i presume) is OK. I believe from reading here that the green wire is the switched ignition feed for the car, so would be the main power for the radio. I had used this fine previously, but it has conked out. I can't see any sign of a fuse for this wire?
Any help appreciated as to what to check next.