问：当我的汽车启动时，我会看到我的大灯和indash灯变暗。

A starter motor uses a lot of current and thus will cause a voltage drop at the battery. During the brief interval that a starter engages and runs, any other circuits that are also "on" could see the voltage drop and, in the case of lighting circuits, bulbs will dim. The dimming will be more pronounced if the car battery is old and/or the car wiring has poor ground connections, and high resistances, much of which come with age. You should have the battery tested in a负载测试。电池非常重要。如果电池在负载测试中仅具有边缘通行证，您应该只是简单地安装新电池to reduce diagnostic headaches. Charging system output should also be verified against factory specifications To have the alternator inspected please request an交流发电机检查/更换and the responding certified mechanic from万博体育入口will get this resolved for you. As far as the sub, the problem you are describing may mean the system is powered when it is not supposed to be. That would have to be investigated in anelectrical diagnostic。If you have further questions or concerns, do not hesitate to re-contact万博体育入口因为我们一直在这里为您提供帮助。