OEM Xenons faulty



So it aint the controllers. I noticed one bulb is white whilst the other is bluish in colour like a light purple. The light purple bluish one is faulty.
Is it the bulb and what can I expect to pay for another? Should I buy them from a Bosch retailer or from the agents themselves?
How would I test them ignitor cables for the xenons?
Your assistance is highly appreciated.
If interested, we carry high end Morimoto D2S bulbs that'll work and many other MBs have upgraded to after theirs die. Offered in 5000K (pure white) and 6000K (white with a slight bluish hue).
5000K: http://www.aznoptics.com/index.php?m...products_id=72
6000K: http://www.aznoptics.com/index.php?m...products_id=73



So it seems that I have one 6000k bulb and one 5000k bulb on my car. Probably the previous owner made this hick up.


