LED Headlights: Hiw Many Watts? - Page 3 - Rennlist - Porsche Discussion Forums

Notices
924/931/944/951/968 Forum
Sponsored by:
Sponsored by:

LED Headlights: Hiw Many Watts?

Old 01-09-2019, 04:51 PM
  #31  
bureau13
Addict
Rennlist Member
 
bureau13's Avatar
 
Join Date: May 2014
Location: South Florida
Posts: 2,940
Default

Originally Posted by MAGK944 View Post


Yes except that wasn’t my point. The e-code lenses focus all of the light towards the front, LEDs focus all the light towards the front, therefore LEDs in e-code housings will reduce side vision which degrades turn-in lighting. That is why all car manufacturers use an adaptive system when they use LEDs, the adaptive system takes inputs from steering and pitch to aim those LEDs to restore the light when the car hits a dip, brakes or steers left and right. I doubt very much they would go to that expense if they thought non-adaptive LEDs alone provided sufficient safety.

Ahh, got it. FWIW, the thread I mentioned before in the 928 forum tried a number of different LED bulbs, and ended up recommending one that emitted light in the same directions as a proper H4 bulb. Any LED bulb that doesn't do this is not going to perform optimally in these housings, as the reflectors and lenses are designed for that. Many of the alleged H4 LED bulbs do not do this, but apparently at least one of them does....although I don't recall if they specifically discussed turn-in lighting.
bureau13 is offline  
Old 01-09-2019, 11:28 PM
  #32  
snb13
User
 
snb13's Avatar
 
Join Date: May 2010
Posts: 676
Default

I drive primarily in the country. No street lights. There's plenty of light from my LED's to see street signs.
snb13 is offline  
Old 01-10-2019, 01:21 PM
  #33  
bureau13
Addict
Rennlist Member
 
bureau13's Avatar
 
Join Date: May 2014
Location: South Florida
Posts: 2,940
Default

I just realized the link I referenced but did not provide might not be as easy to find as I thought, as the initial point of the thread was about designing a sealing mechanism for the LED bulbs. Also note that this directly pertains to the European 8" H4 housings in the 928, although it should apply to the 7" H4 replacements for sealed beam lights as well I would think.

https://rennlist.com/forums/928-foru...l#post14323832
bureau13 is offline  
Old 01-11-2019, 02:48 PM
  #34  
AkechiMotors
Addict
Rennlist Member
Thread Starter
 
Join Date: Dec 2015
Posts: 180
Default

Originally Posted by bureau13 View Post
I just realized the link I referenced but did not provide might not be as easy to find as I thought, as the initial point of the thread was about designing a sealing mechanism for the LED bulbs. Also note that this directly pertains to the European 8" H4 housings in the 928, although it should apply to the 7" H4 replacements for sealed beam lights as well I would think.

https://rennlist.com/forums/928-foru...l#post14323832
That's a great thread - very valuable info!
AkechiMotors is offline  


Thread Tools
Search this Thread

Contact Us About Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: