Which where bulb?
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Trailering
Joined: Apr 2024
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How can the same bulb be used in high and low beam? I would believe that can't possibly be right. I appreciate your answer but if the same wattage bulb is used in high and low beam then all four headlights would be the same brightness.
Cargo Master
Joined: Oct 2011
Posts: 2,887
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From: SoCal/Wyoming
Dual Filament Bulbs
Dual filament bulbs contain two filaments in one bulb. This allows the bulb to serve as both the high beam and low beam headlights in one.With the lower filament on, the bulb acts as the low beam. With both on, the bulb is brighter and functions as a high beam headlight.
H13 bulbs are dual filament bulb, that is why they shine brighter on high.
Lead Driver
Joined: Nov 2005
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2019 halogen headlight trucks have 4 low beams, and 4 high beams, the H13/9008 bulb is a dual filament bulb, has both high and low beam in same bulb.
Lead Driver
Joined: Oct 2014
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From: NY/Canada border
It was that way for several model years. That’s why Super Duty drivers often had other drivers flash headlights at them. Others would see 4 headlights coming at them and assume they were high beam when in actuality it was 4 low beams.
Logistics Pro
Joined: Sep 2002
Posts: 4,411
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From: Central KY
What's amazing to me is how they doubled the number of bulbs and the output is still absolute garbage. Can't see s*** with these headlights. First thing I did was put Silverstar bulbs in mine, but to be honest I should have gone LED again.
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Trailering
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Lead Driver
Joined: Oct 2014
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From: NY/Canada border
At any rate, I finally got a truck with factory LED when I bought the current 2023. I'm much happier with those and with the factory C ring as DRL along with yellow fogs. Nice contrast for others to see me coming.
Lead Driver
Joined: Nov 2005
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Everyone is so headlight SPOILED these days!
Boy, my first truck was a 1964 F100, back before there were halogen lights in everything even.
That truck had a 1970 Lincoln 460 and a C6 in it, talk about outrunning the headlights!
As far as my truck, the high beams suck, I hardly ever run them, the low beams do pretty well.
I get headlights flashed at me often, I flash LOTS of people who seem intent on refusing to dim their high beams, I think they are rebelling against all the super bright LED lights in other vehicles.
Each night I am on the road, I get blinded multiple times by some jokers with LED headlights so bright and poorly aimed, that it often is physically painful.
I used to love driving the highways of this country...used to...
Boy, my first truck was a 1964 F100, back before there were halogen lights in everything even.
That truck had a 1970 Lincoln 460 and a C6 in it, talk about outrunning the headlights!
As far as my truck, the high beams suck, I hardly ever run them, the low beams do pretty well.
I get headlights flashed at me often, I flash LOTS of people who seem intent on refusing to dim their high beams, I think they are rebelling against all the super bright LED lights in other vehicles.
Each night I am on the road, I get blinded multiple times by some jokers with LED headlights so bright and poorly aimed, that it often is physically painful.
I used to love driving the highways of this country...used to...
Lead Driver
Joined: Oct 2014
Posts: 5,946
Likes: 1,359
From: NY/Canada border
Not to mention the jokers with the LED light bars that not only use them on the highway, but refuse to turn them off for oncoming motorists.
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fabsroman
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Aug 15, 2021 10:50 PM