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