After my recent ramblings about coach lighting and the switching of same, Toto commented about my corridor connectors visible in one pic, and suggested that, since my original posting on this had seemingly been lost on the transfer to the Xenfolio portal, it might be a good idea to re-post for the benefit of new members or those who missed it the first time around. As it happens, I still had the original set of pics from the first posting, so here we go again. All that's needed is a sheet of black art paper of the kind used for surrounding photo's in picture frames, no idea what it's called, but available at Artists suppliers (I use "The Range" in the UK, other suppliers are available). The instructions and dimensions given are for 00 gauge and fit most if not all the usual Hornby/Bachmann/Lima coaching stock, but it's simple to vary dimensions to fit your own stock or different gauge models. So to start, using a sharp knife/scalpel, you'll need two pieces of 60mm x 30mm and two pieces of 30mm x 15mm, the smaller pieces being glued either end of the cut and folded 'bellows'.