Where you run the cable depends on your ability to access the spaces, but generally outlets are fed from below and wiring for lighting is fed from above.Be careful of hazards such as asbestos and fiberglass insulation, as well as the old wiring.

Homeowners are allowed to do electrical repairs on their own houses, but the work will have to be inspected.

You may want to consider hiring an electrician to advise and assist you with planning and discovery, since understanding the wiring of an old structure involves a good deal of experience and knowledge.

The first step in replacing wiring is deciding how much you will access the walls.

Replacing electrical wiring is part of making an old house safer, more modern and more livable.

The approach you take will depend on your budget, your ability to access the walls, attic, and crawlspace and the level of demolition allowed.

This kind of remodeling is easier to do in a newly purchased home than a well lived-in one.

Do not attempt to replace your own wiring unless you are experienced in electrical construction.

If your house is newly purchased, before you paint or move in, plan on cutting numerous holes in the walls to make running the new cable easier.

If your house is lived-in, or you don't want to cause a major disturbance, the task will take much longer and your options will be limited.

You may have to leave the wiring in the walls intact and only replace the cable in the attic or crawlspace.

The majority of the new cable will likely be run through the attic and crawlspace before it enters the walls.