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Why is my high beam not working on my truck?

Why is my high beam not working on my truck?

If the indicator lights up, then almost certainly the high beam circuits are energized. And if the circuits are energized but the bulbs don’t light up, it’s a 99% probability that the bulbs are faulty. So your logic says it is more probable that four separate filaments failed all at once than a single wire or control signal?

How to fix the high beam indicator light?

Will post when I get a fix for the high beam indicator light. The high beam indicator gets power through the headlight. The LED lights won’t complete the circuit. You would have to add a small light bulb or resistor between the red/white and red/green left headlight wires or red/blue and red/green right headlight wires.

What’s the difference between low and high beam headlights?

Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis. Required by law around the world, low beam and high beam headlights help you see and be seen, in all kinds of weather and at any hour of the day.

Do you need high beams or low beams?

Low beams are the bare minimum, for safety’s sake, but high beams are an absolute must for night driving over 25 mph. For most vehicles, headlights are a basic electrical system, controlled by switches and relays to turn them on and off.

If the indicator lights up, then almost certainly the high beam circuits are energized. And if the circuits are energized but the bulbs don’t light up, it’s a 99% probability that the bulbs are faulty. So your logic says it is more probable that four separate filaments failed all at once than a single wire or control signal?

How to fix high beam indicator on LED headlights?

FIX 2: Used a 2.8K Ohm 0.25w resistor between the high beam (Blue/White) and and neutral (Black) right behind one headlamp. The resistor will “burn” the excess power and the high beam indicator won’t turn on as it will keep the voltage around 0.2V dissipating 0.001W on low beams.

Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis. Required by law around the world, low beam and high beam headlights help you see and be seen, in all kinds of weather and at any hour of the day.

Low beams are the bare minimum, for safety’s sake, but high beams are an absolute must for night driving over 25 mph. For most vehicles, headlights are a basic electrical system, controlled by switches and relays to turn them on and off.

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Ruth Doyle