If you need to have any kind of electrical work done in your home or business then you will need to hire an electrician. An electrician is specially trained to understand how electricity works and how to safely manipulate it. You are not trained and could get hurt very badly attempting to do any electrical wiring or repairs on your own.
If you do not actually get hurt doing the work yourself you do run a severe risk of causing damages to your home. Improper wiring, a short in the system, and weak system or frayed wires are all high risk for a fire. Do yourself a favor and avoid the problems and hire an electrician instead.
You may navigate https://bkelectricservices.com/electrician-brentwood/ to find a properly qualified Brentwood electrician. Start by asking around your friends and fellow co-workers. Word of mouth is a very powerful tool and if your friend was happy with work that was done chances are you will be also.
Check online and the yellow pages of the phone book for electrical contractors as well. Most licensed contractors have a business and are listed in the phone book. Do not just hire your friend's cousin Billy Bob who might know a little about "wires."
Another place you can check for a recommendation for an electrician is the local electrician's union. Every city and state has a chapter of the union and they can direct you toward a fully Brentwood electrician in your area. Make sure that any electricians you are considering have their current licenses and insurances up to date.
All Brentwood electricians have to renew their licenses on a regular basis and insurance against any damages or liability is just good practice so check the paperwork before you hire them.