...er, yes, Mango. The cable has to pass through two bulkheads iirc, and it is a devil of a job to line up. I plan to pull the existing one through with a mouse or tracer line attached, like electricians use, in the hope the cable can be guided to the second hole. I'm also hoping for some sunshine, leaving Europe and a blonde with big.....
Prob won't do this job till much later in the year, or even next year, as I work abroad at the moment and will be back there in July. I'll report in once I've tackled it.