Why don't my head lights and break lights work? Please help

Hello, did you recently install the stereo? How are you powering your amplifier? If you have lights flickering when rolling up the window with the power window switch, have recently performed vehicle modifications including stereo and amplifier installation and your high beams still work when your regular lights do not, it sounds like a wiring short for some kind of open circuit related too the lighting. Hands on testing of the related circuits - with the aid of electrical testing equipment and a workshop manual including wiring diagrams that will help determine what color wire at what connector does what - is essential. Seek the guidance of a local shop if you do not have then tools or know how. https://repairpal.com/auto-repair-near-me