Any junction box has to be accessible. Anything not accessible has to be crimped or soldered and normally epoxy resin impregnated shrink sleeve would be used to give physical strength and electrical isolation and continuity. At some point a wall may get damp and cables disturbed and the joint needs to be as good as the original cable. Also there are very defined routes for cables which must be followed horizontal or vertical from switch but not both.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!