Replacement of bathroom lights need to pay attention to some safety matters, first confirm that the light switch off and cut off the power supply, and then operate in accordance with the following steps:

1. Use tools such as wrenches to unscrew the original lampshade, if it is a ceiling lamp and so on need to dismantle the entire lamp holder first.

2. Remove the original bulb, pay attention to avoid force to break the bulb, the hand should hold the bottom of the bulb, gently rotate to remove it and put it in a safe place.

3. Make sure the new bulb is of the same type and specification as the original lamp head, then screw the new bulb in, gently rotate it to the bottom and insert it into the lamp base, be careful not to break the bulb or bend the lamp head with too much force.

4. Follow the reverse operation to install the new lampshade back to the original position, fix it tightly, and check whether it is fastened firmly.

5. Turn on the power and test whether the new lamp can light up normally.

Summary:

It is important to note that you need to pay attention to safety during operation, turn off the power and use safety tools. If you are unfamiliar with electrical appliances or worried about safety, it is recommended to find a professional electrician to install.