Installed my subwoofer today, swapped it out of the work van. Had some problems with it initially as I didn't have a good earth, fixed that up promptly and then I turned on the radio and it didn't work, didn't have time to trace the cable before it got too dark to work but found one end of a cut coaxial cable in the engine bay.... could be an old CB antenna cable from previous owner or I may have somehow cut the radio antenna......frustrating stuff.