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Old Jan 17, 2024 | 12:18 AM
  #1  
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Alexis Garcia
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No Low Beams

I’m having a problem where only my high beams work and my low beams don’t.

So when I turn on my light switch at night, the high beams turn on. But when I switch my multifunction switch to high beams, my headlights turn completely off. And my high beam symbol on my instrumental cluster doesn’t light up

So basically when I turn on my headlights, instead of it showing low beams it shows high beams. There’s no way at the moment to turn on my low beams

Would this be an instrumental cluster problem?
 
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Old Jan 17, 2024 | 12:19 AM
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Alexis Garcia
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Originally Posted by Alexis Garcia
I’m having a problem where only my high beams work and my low beams don’t.

So when I turn on my light switch at night, the high beams turn on. But when I switch my multifunction switch to high beams, my headlights turn completely off. And my high beam symbol on my instrumental cluster doesn’t light up

So basically when I turn on my headlights, instead of it showing low beams it shows high beams. There’s no way at the moment to turn on my low beams

Would this be an instrumental cluster problem?

I’ve also replaced the multifunction switch seeing if that was the problem but it did not resolve issue
 
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Old Jan 17, 2024 | 12:30 AM
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Weird.

No other changes to the headlight/electrical system other than the multifunction switch?

Also what year truck. Dash had substantial changes.
 
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Old Jan 17, 2024 | 04:16 AM
  #4  
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Originally Posted by aawlberninf350
No other changes to the headlight/electrical system other than the multifunction switch?
If you changed a pigtail or something in the system recently, there is a possibility that the polarity of the wiring could be different. I just experienced this on a swap from aero to sealed beam headlights. Between the original wiring and conversion pigtail, somehow the "signals got crossed", so to speak. My prob presented as no high beams when switched on. The takeaway is that if you worked on something in the elec system, you could have inadvertently got things swapped around (maybe not even on the headlights themselves) and this is how it presents.
 
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Old Jan 18, 2024 | 10:12 AM
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Low beam usage these days is like turn signals on BMWs. The switch is there but why bother to use them?

 
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