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Help me diagnose this issue...

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Old May 2, 2025 | 11:44 PM
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Question Help me diagnose this issue...

I've been having a weird issue were my gauge cluster would freak out and voltage would drop just from touching my brake. It would bob up and down then return to normal. This is super recent and i heard it could be a problem with my front lights so I inspected everything and my passenger side turn signal bulb and socket were badly damaged, (burnt and corroded). So i installed a new socket and bulb but now same gauge problem is happening plus when I turn my lights on the passenger turn signal light stays on.

I have no idea what's happening. Please help.

I attached some videos to show you. there google drive so i hope it helps
https://drive.google.com/file/d/1EpH...ew?usp=sharing
https://drive.google.com/file/d/1cXz...ew?usp=sharing
https://drive.google.com/file/d/1osJ...ew?usp=sharing
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Old May 5, 2025 | 11:37 AM
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bump... and someone please help
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Old May 5, 2025 | 11:45 AM
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Try replacing the passenger rear bulbs.
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Old May 5, 2025 | 12:04 PM
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The thing is that they work, all the rear bulbs work, but when I have my headlights on then they proceed to not work.
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Old May 5, 2025 | 08:04 PM
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You might have a semi broken wire to the alternator
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Old May 6, 2025 | 09:15 AM
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Let's start with the simple things first. Turn off your headlights and parking lights, turn on your hazard flashers, then walk around the car and check that all bulbs are flashing - one each side in front and two each side in the rear. Next turn off the hazards and turn on your headlights (full headlights not just parking lights) then walk around and make sure the front lamps are dim and all three bulbs each side in the rear are on. Now, leave the headlights on and repeat the test with the hazards, making sure the front lights flash bright and the two inner bulbs of each tail light also flash bright (the outer tail light bulb will remain dim).

Judging by the way your right side turn indicator stays solid with headlights on, I suspect you'll find that one of the bulbs on the right side does not flash as it should. That will be the source of your problem - bright filament of that bulb burned out, socket not making good contact, problem with the wiring on that side, or possibly even a DRL module problem. There are ways to narrow it down once you've located the issue.
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Old May 6, 2025 | 08:48 PM
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Originally Posted by WhiteBird00
Let's start with the simple things first. Turn off your headlights and parking lights, turn on your hazard flashers, then walk around the car and check that all bulbs are flashing - one each side in front and two each side in the rear. Next turn off the hazards and turn on your headlights (full headlights not just parking lights) then walk around and make sure the front lamps are dim and all three bulbs each side in the rear are on. Now, leave the headlights on and repeat the test with the hazards, making sure the front lights flash bright and the two inner bulbs of each tail light also flash bright (the outer tail light bulb will remain dim).

Judging by the way your right side turn indicator stays solid with headlights on, I suspect you'll find that one of the bulbs on the right side does not flash as it should. That will be the source of your problem - bright filament of that bulb burned out, socket not making good contact, problem with the wiring on that side, or possibly even a DRL module problem. There are ways to narrow it down once you've located the issue.
. Thank you so much, for some reason when I fixed my turn signal socket it burnt the relay which gave me the problem, but also whenever I switched the bulbs the relay would go again but it’s all fixed now. I still don’t know why my check gauge light was flashing inconsistently but it’s gone now. Also tested my battery and alternator and everything checks out.
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