A speaker's wire plugs are generally red (positive) and black (negative). Red wires connect to red plugs, and black wires connect to black plugs. If a speaker's wires contain different colors, the wires should be matched to their plugs by their positive and negative symbols. Full Answer >.
Finding wall studs. Wall studs in modern homes are spaced 16 inches on center -- that is thedistance from the center of one wall stud to the center of the next is 16inches. In older homes, studs may be 24 inches apart, or spaced irregularly.
Locate Nearby Studs. If you are hanging wide shelving, you may want to know how far apart your studs are so that you can anchor both ends. In most homes, they are placed 16 inches apart, but occasionally, you will find them spaced 24 inches apart. Measure the distance and use the steps above to locate your second stud.