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How to Replace a Wall Switch in 10 Steps

        Home & Garden | Home Repairs

7. Insert Wires

If you're installing modern wire-grip type of wall switch, cut off end of each wire to leave only 1/2 inch of bare wire. Push one bare end wire into each wire-grip hole, and check that wires have caught properly by tugging gently on them. Caution: If wires or insulation going into electrical box are brittle or frayed, that part of circuit should be professionally rewired.