Thank you, so the ballast in on the headlight housing? and if I take it out will the connector fit the d4s LED or will the D4S LED bulbs accept the ballast connected?Yes but you will need a way to plug the hole left in the bottom of the headlight assembly when you remove the ballast.
There are a few LED options that fit the d4s socket.
HID is a high voltage system LEDs are not, so I would think not compatible without a lot of reengineering. Why do you want to? You can get 2 HID replacement bulbs for $80 Replacement OEM HID Bulbs for 2011-2016 Honda CR-Z (pair) also note current law it is illegal to change headlights to LED if car was not built with them.
IMO HIDs are superior to the cheap LED replacements.
LEDs have their own driver. The plug on the CR-Z balast that supplies the 12v is not a standard plug. You will also need to come up with a way to wire this in.
The HID balast goes away with the LEDs.
Thank you everyone you've been very helpful and responsive!It is bolted to the bottom side of the headlight assembly. You have to remove the bumper cover and the headlight assembly to access it.
I never needed to remove the OEM ballast for installing high quality LED headlight bulbs. The ones I purchased for $80 plug right into the OEM ballast as a D4R/D4S LED conversion kit for those low beam headlights. And yes, they are bright, a bit brighter than the HIDs, or at least the ones I've compared them to. You could also go the expensive route with diodedynamics LED bulbs for $200, but I don't know how different their product is or the quality. I don't recommend using halogen as they look ugly and use more energy than the LED.
On a side note, I also found a good 9005 LED product that can be used as DRL and high beams as it changes the brightness intensity when you switch on and off your brights. I also posted on my build thread 2 old photos showing the brightness quality, I currently use the same LED bulbs with no issues.
I believe the conversion kits they are referring to are specific to D4S and are intended to be run at that voltage.Of course, if you did not remove the ballasts the LEDs will be brighter, you are driving them at a much higher voltage than they were designed for. Brighter does not mean more useful or properly aimed. Headlights especially now are a highly engineered and designed product.
Illegal or not, most people are switching over. And as I've said before, if the adjustment level is set properly, there should be no problem.Of course, if you did not remove the ballasts the LEDs will be brighter, you are driving them at a much higher voltage than they were designed for. Brighter does not mean more useful or properly aimed. Headlights especially now are a highly engineered and designed product. Here in the US, LED headlight conversions are still to this day illegal if the car was not built with LED bulbs from the factory. This should be changing soon, but currently not yet.
I don't have any flickering issues with my dimming DRL/Highbeam LED bulbs, but I also use resistors just in case.Huh, look at that, they do have direct drop in D4S LED bulbs that use the plug from ballast to HID bulb. Didn't have that when I did my bulbs.
Tell us more about these dimming DRL/Highbeam bulbs. Does it also solve the ever so slight flickering when in DRL mode?
I had a similar problem but all it was its not correctly set in place. They find out in the technical check (mot in English) to make a car Road legal. Now, no problems whatsoever, I barely use the dimmed lights.I replaced the HID with newer ones and they are not very bright. It is hard to see the road. I have LEDs on my Accord and they are amazing (20k Lumens)