Most electrical codes require just one outlet in the garage. And that's just what most builders give you—one measly outlet for all your tools and toys. If you have open studs, you can easily run wire and add outlets as long as you follow a few basic rules (find articles about garage wiring here). If your walls are covered, you don't have to cut into them to run wires. Instead, you can mount metal or plastic wiring channels and outlet boxes right on the wall.