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.
Fastener manufacturers and carpenters use archaic terminology to identify nail sizes. Following a numeral, a lowercase d represents the word penny, which refers to an outdated system of determining price. To frame standard stud walls, carpenters may use a combination 16d, 10d and 8d nails. Common 16d framing nails, called commons, measure roughly .162 of an inch in diameter and 3 1/2 inches in length. Vinyl-coated 16d sinkers measure roughly .148 of an inch around and 3 1/2 inches long.