When headlights are turned on everything blinks?

2002 SATURN SL2
202,427 MILES • 1.9L • 4 CYL • 2WD • MANUAL
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THOMAS HOWARD
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When headlights are turned on as I turn the left or right turn blinker everything blinks mainly all the turn signals flash my radio turns on and off when key is in the off position.
Nov 27, 2024 at 5:53 PM
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STRAILER
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Do you have a battery warning light on while you drive? If so, the alternator is not charging the system. If not, it sounds like the flasher module needs to be replaced, has the car's wiring system been tampered with? There is nothing that connects the radio to the lights except the alternator. Let's see if the alternator is charging, this guide can help:

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Please upload pictures or videos in your response of any problems so we can see what to help you with.
Nov 28, 2024 at 12:19 PM