Head lights.. What do the upper lights do?

[STM]

On my PB with LED projector lights, both on regular and high beam, only the lower projector lights come on.. When do the upper ones light up?

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[HammaMan]

On the reflector LED, the top is the low beam and the bottom is the high beam.

 

[FORDTEXAS]

i believe the top projector is for glare free lighting.. don't quote me 100% though

 

[dolsen]

On low beams, both beams should be on. Though the top projector is dim compared to the bottom

 

[JExpedition07]

I believe it’s the same as the halogens but opposite. I had the same question. Top is standard beam and high beam is where the bottom bulb joins in. See below:

 

[dolsen]

Generally speaking the upper beam is the low beam and the bottom beam is the high beam on most (all?) vehicles with stacked bulb housings.

the projector LED’s have both beams on during low and the lower bulb is the brighter one on low beams. I know this because I had to do a bunch of troubleshooting Wigan upgrading mine

 

[STM]

I took photos of the head lights reflected in a store front.. It appears like only the lower projector lights up... First photo is low beam and the second one is the high beam

 

[JExpedition07]

Well now you have me puzzled

 

[dolsen]

I took photos of the head lights reflected in a store front.. It appears like only the lower projector lights up... First photo is low beam and the second one is the high beam

Look into them and I promise you’ll be able to tell the upper ones are on. The upper beams are almost certainly washed out since it’s daylight out

 

[STM]

Look into them and I promise you’ll be able to tell the upper ones are on. The upper beams are almost certainly washed out since it’s daylight out

I just stepped out and checked the lights again.. You are right.. The upper ones are lit up but the brightness is far lower than the lower projectors..

I also stared straight into the beams (yes.. I know.. Dumb.. But in the name of gathering experimental data)... Because of the curvature of the lens for focusing the beam.. My eye had to be lined up just right to catch the full glare from the projectors..

Here is what I found..
Low beam -
Lower projector had a strong beam of light
Upper projector beam was far weaker than the lower one

High beam -
Lower projector had a significantly stronger beam than when it was set for low beam
Upper projector had a significantly weaker beam then when I had it set up for low beam!

Any idea why the light intensity in the upper projector was significantly lower on high beam setting?

First image is low beam and the second image is for the high beam..

 

[FORDTEXAS]

don’t forget that the projector beams have auto leveling. the auto leveling may compensate for the “high beam” effect.
don’t quote me 100% though..

 

[Mladen5375]

Some folks here are comparing apples to oranges. The LED headlights on the lariat and above are completely different than the lower models. My 502a does the same thing as described in the original thread

 

[thebigdu]

I hope somebody is able to provide an accurate answer to this question....I've been curious about this for a while. I actually think the stacked reflector LED headlights on these trucks look better than the projector sometimes because the primary beam is higher up in the housing.

I'm assuming the upper projector is primarily for glare-free use, as @fordhouston suggested.

 

[FORDTEXAS]

@Jesse-Infotainment could you by chance chime in?

 

[astrand1]

Some folks here are comparing apples to oranges. The LED headlights on the lariat and above are completely different than the lower models. My 502a does the same thing as described in the original thread

well just to clarify only the lariat 502a and up have the projectors. the mid and low lariats along with the xlt 302a have the reflector LEDs.

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