Can I add speakers into the rear passenger doors?

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. So sorry to hear you're having trouble with your vehicle. Yes, you can add speakers to the rear passenger doors of your Sentra. However, it is unlikely that the car is prewired for additional speakers, and if it is, they will not be plug-and-play. If your Sentra isn't prewired, you can still add speakers, but you'll need to run new wiring from the head unit or amplifier to the rear doors or maybe even replace these components. It's a bit more involved, so if you're not comfortable doing it yourself, it might be worth consulting with a professional car audio installer. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!