Thanks Richie, Not sure what you mean - single fuse F47 and F7? Both these are good.

I've now pulled all fuses (engine and central box) and all are good - everything else seems to work. Also checked for continuity from the F47 fuse pins to the cigar lighter T connector. Two cable colours; one Br/Y and one B. The Br/Y gives a buzz from one fuse pin whereas the Black cable gives nothing (either pin). Am I right in thinking both cables should show connected to the fuse or do I have this wrong - i.e. only the live feed through the fuse for one cable needed and the other being earthed? I might have my understanding all wrong [head scratch].