LED light strips are usually manufactured in 12 and 24-volt variations. Depending on where you plan on installing your strips, you’ll need to pick the right supporting voltage. If you’re installing an LED light strip in your car, opt for a 12-volt variation. But if you plan on running longer light strips, 24 volts is best to avoid wiring issues. However, keep in mind that your power supply needs to match the voltage that you choose.