Hello all here is my first Instructable, 'I hope its of some interest,' this combines my desire to save cash and the opportunity I have had this year to build our family a house. When building our new house I decided to have all the lighting 12dc from source. to this end in the boiler room I have MPPT Solar controllers charging 12v 100AH old UPS batteries. I bought a boat 12v A/B switch and a 600W switch mode supply from China. In this way I have a backup plan should my batteries die. All the wiring is as standard UK spec but I used Tri rated cable just to be sure. I looked at a flying "trapeze " system and to buy it wholesale would be loosely £1100 I have build a comparable lighting system for under £100. (excludes lamps although they are under £2 on Ebay.) A good tip is to fix both ends and pull a guide string between then screw in the eyelets following the line. The slightly tricky bit is soldering on the Croc clips. other than that its very simple.