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How to Change the Bulb in Low-Voltage Lighting

Cecilia Harsch

With low-voltage light bulbs ranging from 1 to 50 watts and voltages of 12 and 24, changing the bulb in low-voltage lighting is not that simple. Low-voltage lighting is used in both indoor and outdoor applications and both types of light fixtures utilize either a wedge base or bi-pin base bulb. When changing a bulb in low-voltage lighting, take the bulb you're replacing with you when purchasing the new bulb. It can save you some time and frustration knowing you got the right bulb the first time.

  1. Remove the light fixture cover. Depending on the manufacturer and the style of low-voltage light you have, the fixture cover pops off, twists off or is held by screws.

  2. Grasp the bulb with your fingers and pull it from the socket. Check the wattage and voltage printed on the bulb for the light fixture to verify you have the correct replacement bulb.

  3. Wrap the tissue around the replacement low-voltage bulb to avoid placing your fingers on the glass. Oils from your skin can damage the bulb, leaving black spots and possibly causing the bulb to burn out.

  4. Push the bulb into the low-voltage light socket. Do not force your replacement bulb into the socket. If it doesn't fit, you have the wrong replacement bulb.

  5. Replace the cover on your low-voltage light fixture.