Hey all. I'm new to the forum and have just registered and have been looking around the site a bit. I saw where somebody mentioned something about being able to make the high beams and low beams all be on at the same time. Can someone tell me how to do this? Will this allow the fog lights to be on with the high beams as well? My truck is a stock 2003 Supercrew 4x4 Lariat with the 5.4 engine. I bought it used about 8 months ago. It is my first Ford and I love it. It won't be my last Ford because now I am hooked. I know this will be the first of many questions. Thanks for any help.

 

Hi & Welcome!

It's in here: https://www.f150online.com/forums/ar...-articles.html

Be prepared for some Pontificatin'

https://www.f150online.com/forums/4371124-post12.html



Good luck.

MGD

 

Your truck uses a 9007 dual-filament bulb. One is low and the other is high. Each has their own respective lighting curcuit on your headlight switch so no you wont be able to have both of them on at the same time (that is, unless you hold back the Flash-to-Pass). Also, this would create an immense amount of heat and shorten the bulbs life.

Also, I've done the fog + high beam thing. I don't advise it. With the fog lights lit with high beams, your eyes focus on the road in front of your tires since its brighter instead of the long road in front of you (the whole point of high beams). It can be very dangerous.

 

^^ Meh.

That ain't Pontification .....

Now ...THIS be Pontificatin': https://www.f150online.com/forums/20...od-2009-a.html


MGD

 

Thanks for the information guys.

 

Not to be rude or arrogant, but YES YOU CAN. I have done this mod to 3 trucks and love every minute of it.

All three trucks use Silverstar Ultras and not one has melted yet. I only use the high beams while driving so I have airflow to help - not sure how much it does though. I have not had one bulb burn out in the 11 months I have used them like this. Maybe one will blow tonite

 

Standard automotive headlight bulbs are made of aluminosilicate glass which has a high melting point so the glass isnt going to melt. I'd worry about your harness putting out that much voltage. Both filaments are about 5mm away from each other and headlamps get light from the halogen cycle, which is very specialized about its high temperature. Too much will disrupt things.

Besides, if you run both filaments, you aren't striking the reflectors as they were designed. Very inefficient and can cause glare.

 

What causes the light from striking the reflectors as they were designed?

 

Light reflects at the same angle it was struck at. So instead of one light source striking the reflector at entry angle "X", you've got two intermixing. So instead of a "low" and "high" beam you have a "lowhigh" I guess you could call it "midbeam". I've done the low & high thing before. The low & high at the same time sucks compared to a regular high beam. Very mixed and the glare is obnoxious. Causes foreground eye focusing (which defeats the purpose of the high beam, hurr durr)

 

So the light beam gets redirected from the direction it was originally going to be sent? Or do both beam patterns still reflect in their original directions at the same time?

 

Well Einstein proved that light emits properties of both a particle and wave. But in this case, its acting as a wave and both are still reflecting, but the low beam is "overpowering" the beam of the high filament.

 

Oh boy ...

Given the truck's power supply is ~12 volts nominally, exactly WTF does this mean?

Better hit the books, Craptor - yer theory is still somewhat lacking - despite all the Wiki plagiarism to the contrary ...

I'll give you the benefit of the doubt that you were actually referring to amperage .... just say 'yes'

MGD

 

Nice catch. I wasnt typing what I was thinking

Wiki doesnt have anything on The Big Bang Theory. Funniest show in the world and can be very informative!

I was referring more to the fact that both are running, could melt the harness. I've seen it happen to people putting in bigger bulbs but not upgrading the harness

 

Bazinga!

Love that show.

 

But how do you melt the harness when you have two separate power wires?