Brake light wiring?

1994 BUICK LESABRE
140,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
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CHRISTINE 77
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When my key is off and I press the brake light, or the brake pedal, I mean my stereo comes on. I don't know how to fix it. any help would be appreciated.
May 5, 2025 at 2:25 PM
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STRAILER
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Do you have an aftermarket radio? It sounds like it is wired incorrectly. There is no connection between the radio and brake lights fyi. Here is the brake light wiring diagrams so you can see for yourself. Check out the images (below). Please let us know what happens.
May 6, 2025 at 11:39 AM
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CHRISTINE 77
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Thank you and I realize that they're not supposed to connect but I got the car for my son used obviously and it had some major wiring mishaps I guess you could call it. I had never heard of a car radio coming on without the key on by pressing the brake. I just thought it was something that you might be able to help with pointing me in the right direction on which wire to check out yeah.
May 6, 2025 at 7:13 PM
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CHRISTINE 77
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Thank you again.
May 6, 2025 at 7:13 PM
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STRAILER
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Sure, I can help, we will need to remove the radio and disconnect the white wire from the power source of the radio and reconnect it to the power source of the original radio which is an orange wire and a yellow wire. That way the radio will work normally again, if you upload images of the wiring I can help you further. Check out the images (below).
May 8, 2025 at 10:17 AM
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CHRISTINE 77
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Not sure how to get this clip open or what that orange wire that's broken goes to.
May 9, 2025 at 2:34 PM
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CHRISTINE 77
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This.
May 9, 2025 at 2:34 PM
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CHRISTINE 77
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Plus I have questions about a couple other spots with pictures but can only seem to add one at a time. where does this plug into it's by the driver side door under the dash just hanging out there.
May 9, 2025 at 2:37 PM
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CHRISTINE 77
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Also could you possibly point me into the direction of where my fan thermostat might be I found the thermostat and changed it, but the fans still don't kick on with temperature change. I also change the temperature sensor already.
May 9, 2025 at 2:37 PM
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STRAILER
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Please start a new question for the thermostat issue, we only handle one problem per thread. The empty connector looks like it if for the dome lights, and I would remove the radio so you can service it, BTW it looks like you found way the radio comes on with the brakes. Please upload more images if you have any questions.
May 10, 2025 at 11:40 AM