Worst. Headlights. EVER!!! Advice please!!!
What you are missing is that you have to choose a bulb that matches the planar location of the filament, and the best way to do that is not buy ebay bulbs, and they will cost 5 or more times the price buying them off the bay.
Having said that - the supposition of an issue is vastly overstated as there is some tollerance in parabola design, as least those that I had some design activity involvement, such that the new LEDs work just fine, and produce less glare, a win win compared to halogens.
Thanks in advance!
Ed





You have two options, put some HIR (halogen infrared reflective) bulbs from Philips into your (admittedly garbage) OEM housings. You have to trim one tab off them and then they fit just fine but I forget the number. Do a search and you'll find it. I was completely dissatisfied with this mod and any increase in lumens was marginal at best. Not enough to overcome the craptastic OEM housings. Option 2 is a COMPLETE headlight swap to something like Radioflyer. I ended up with the V3 (IIRC) and they are by far the best headlights on both high or low beam of any vehicle I have ever driven, stock or modded. You get a properly designed HID projector and a properly designed LED high beam with a matching reflector housing. The moral of the story here should be the light source and the reflector/projector MUST MATCH EACH OTHER!
There are a number of options on ebay, the issues are lack of data to predict performance and potentially quality.
I have modded LEDs into lamp housing with great sucess, thus statements like they don't work are flat out wrong.
They all work where work equals they function, how well depends upon the engineering that went into the bulb, the projector or lens, depending upon which system it is.
The worst was the original C5 design where all the light distribution comes off the outer lens.
Much better was to tune the parabola to take a broad range of bulbs and kick that light out down the road through a clear lens.
It is here that filament design "can" impact performance. However -- given the generic anemic 'cheap LED' market offerings there are very few sharp eyes that are going to notice the difference because there are too many other variables that impact actual illumination down the road.
The other issue you will find is that the articles like "Best LEDs..." are nothing more than a means to promote what they sell at 3-5 times the price. Even if they say they test, they don't test significantly different bulbs and most recent entries are not much better than a standard halogen.
Another detail you will find is that the performance data is missing or faked. It will take you a good deal of time to look at bulbs, ask for the data, and determine good from bad.
Then you have choices of pop up or fixed. Projectors, styling, paintable shields, and more options.
There is a hard to find popup that put two projectors into the same package space as the Original design, those are very appealing, however like the others - data of actual lumen output is hard to get.
And... the other thing that you need to look for is DOT on the lens, this is key as they did test the light to certify it for use on USA roads. Lacking the DOT cert, means they basically are not street legal.
I have challenged that where lacking and magically the product disapears off the market in only a few hours - meaning they do know they should have had the DOT cert.
In summary this C5 is probaly one of the toughest to sort out due to the variables, there is no single answer other than the super expensive options are no better than a $300 kit.









This is obviously his realm of research drop it everyone.
