Hello all,

I just changed my high beam (H7 bulbs / flash to pass lights) with 8000k HID yesterday, but when I use it (flash to pass beam) sometimes the hid flickering & interfere my audio sounds. what could be causing this?

thanks....

 

hid is not made for instant on usage. This is why the factory does not use hid in these situations.

HID is like a florescence light it takes anywhere from 10 seconds to 1 minute to warm up and get to full brightness

Edit I misread the question, I though you were using it for 'flash to pass' as it does not work worth a crap for those situations, try a capacitor or enclosing the igniter in a metal box.

 

those ballasts are causing electrical interference it is a common problem with no solution other then removing it.

 

this is very true

 

This isn't the case anymore, early HIDs used to have a warm up period but later ballast are able to strike the lamps straight away. LCI cars with HIDs use the HID as a flash to pass and don't have a seperate H7 halogen for that purpose.

 

Interesting, I wonder if these after market add on HID systems are as quick as you described?

 

lci cars just open a shutter on the normal hid light i thought.

 

That's the way it works on preLCI, at least on mine.

 

So i looked it up, but I still see the "High beam" (actually used just for flash to pass when a car has HID) is as H7 which is a normal incandescent bulb. This was on a 2009 550 and a 2010 550

 

The high beam on LCI's are just a shutter that flips down when you engage the high beams allowing more light to pass through the projector.