Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to replace a lamp switch [title] Purchase a new socket switch from a hardware store. [step] Your new switch can be whatever type you prefer, regardless of the existing switch. For instance, if your lamp has a pull chain but you want to install a 3-way turn knob, all you have to do is buy a 3-way turn switch and a light bulb with 2 brightness levels.

Ending1: [substeps] You can even replace a socket switch with a cord switch. Just purchase a new socket assembly without a switch and follow the instructions for replacing a cord switch. Ending2: You can also use your current bulb's exact position as an indication of which direction the handle (that dangling end) is turning. [substeps] If your two rotating handles have been turned inward, the handle will both turn inward. Ending3: 2-way turn switches work best with wall outlets in homes and porch lights. You also have access to the power supply and heater if needed; however, you may need to upgrade your under-turned switch as you progress. Ending4: In this example, your " black " socket switch can be bought for less than $45. [title] Order a new switch and opener if necessary.

Answer format: ending1/ending2/ending3/ending4