Heat shrink technology equipped tubing can do a lot of good things for you. Not only can it provide your cables higher standards of protection from common factors like abrasion, harmful unwanted chemicals, and unavoidable weather. Secondly, they are great for situations like bundling, particular color-coding, and any kind of strain relief. Hence insulating your cables with this much popular heat shrink technology can be the easiest do-it-yourself technique. It is, however, advisable to know the basics of electrical installations only then you should attempt this procedure yourself.
So be prepared with heat shrink cable joints and a heating gun or heat shrink oven, as they are needed for installation.
Personal Safety comes first. Take all preventive measures like wearing a safety jacket and pair of plastic slippers for prevention against any kind of accident!