Most vehicles have interior lights, also known as dome lights or courtesy lights. These can be located on the ceiling of the vehicle and illuminated as people get in and out of the car. The lights will usually stay on until the vehicle starts so passengers can safely buckle up. Additionally, indoor lights can help with reading maps or finding lost items in the dark. Here are some things you should know about the car Bulb.

　　If your interior lights seem dim, this could be a sign of a faulty alternator or a dead battery. An easy way to determine if it is an alternator is to test the voltage. Special equipment such as a voltmeter is placed on the battery terminals and read while the engine is running. If the reading is low, the alternator may need to be replaced.

　　Flickering lights can mean a number of different things, some of which include corroded batteries, electrical problems, faulty switches, or damaged alternators. Your best bet is to have a mechanic perform a basic inspection of your vehicle, including the battery and cables, to find the root cause of the problem.

　　If your interior lights remain on even when the doors are closed, check to make sure the front hood is properly locked. If it is, the sensor may not be working properly. A mechanic will be able to properly diagnose the problem and make any adjustments to your vehicle.