Amp draw before and after LED.

[oil pan 4]

Originally Posted by bhazard

I'm not to convinced on drop-in LED headlight kits. Seems just like the HID kits. They're going into housings made for halogens. Beam pattern is gonna be all over the place and you're probably blinding oncoming traffic.

Unless I'm wrong?

It took a few hours of experimentation to find the perfect orientation of low beam led in halogen housing to get the beam pattern right.
The led high beams were drop in and go.

But you are generally correct. The ignorant and uncaring just drop them in and go.

[planetaire]

Hello, All

I have replaced in my Prius 2 phev the standard halogen H4 bulbs with led

The led H4 bulb:


The patern in low beam, halogen/led:


The patern in high beam, halogen/led:


The halogen bulb use 61/67 Watts in low/high
The led use 20/20 Watts.

3 times less for more light, estimated twice. The dsc camera use half the time to take the picture with led.

[RedDevil]

Originally Posted by planetaire

Hello, All

I have replaced in my Prius 2 phev the standard halogen H4 bulbs with led...

Wow, you even modded the LEDS to make them fit in the lamp house!

Good to know for other Prius owners wanting to do this mod.
Beam pattern looks good too.

I might do something like that to our I10, my wife complains about poor vision from the standard halogens but I'd rather not put overly bright HIDs in reflector housings not designed for it, nor LEDs if their spread is off.
These look like they would work.

The Insight had very poor lighting through its projector lenses with the OEM halogens and do handle my HIDs well without blinding issues, so I keep using those for now. But if the LEDs work well in the I10, who knows.

[redpoint5]

Originally Posted by planetaire

Hello, All

I have replaced in my Prius 2 phev the standard halogen H4 bulbs with led

Thanks for sharing.

Did you take the halogen photos first, and the LED photos later? There is more light from the sky in the halogen photos and less with the LED indicating that either the halogen photos were shot when there was more light out, or the exposure/aperture/sensitivity settings on the camera were different.

I find before/after photos to be inadequate to show relative brightness unless they can be taken with manually controlled settings that hold everything equal. But as you say, it shows the beam pattern which is valuable.

[planetaire]

Yes the halogen first.
The camera then receive a little more light for the halogen picture..
So there may be more then 2 times more light between the led / Halogen.

The camera use 1/2,8 aperture for both bulbs; just change the speed.

@RedDevill. Yes I had a problem in my prius because the led-heater have a to big diameter over 51mm.
There where 2 solutions: reduce the diameter or insert a tube. I used the second solution. Easier.

[deejaaa]

Originally Posted by NoD~

This is the review that made me want to try them...
Group

I can tell you that the pattern is about the same as my old lights. As the review said, these specific lights definitely get right in front of you bright, but not so much in the distance. Definitely what I'm experiencing (though the distance is about the same as old lighting, closer up definitely brighter). I haven't had anybody flash their lights at me so far (only had them for maybe a week and it's not a big area). People around here aren't shy about letting you know, either. My wife's factory xB lights on low beams gets people flicking their headlights at me just about any time I drive at night. All that said, I can definitely see your concern as LEDs are very directional. Time will tell for me with my headlights.

can you post pics of output? also oncoming?

[Magician]

I put LED's for all of my running lights and the lights are brighter with much less power used. LED Headlights getting ordered today. I should easily be only using about 35% of the power used compared to stock. This means driving at night won't drain my battery nearly as quickly and I don't drive at night near as much as daytime