I ordered two HID Xenon kits from amazon and installed them this weekend. My HID behaved exactly as demonstrated in this video I found in youtube:
I was so, so lost. I have a 2007 Grand Cherokee Lorado. I almost started to trash the whole thing HID kit and go back to stock. I somehow found some patience and read forums here and there and found this one which was very very helpful:
After work today, I went straight to Radio Shack and bought two 4700uF capacitors (Part#272-1022) and added it to the HID wire that connect the stock power wire to the Ballast as stated in the forum above. THE FLICKERING STOPPED COMPLETELY AND I AM SO, SO HAPPY. THANK GOD. I am here because I wanted to share my experience and hope that this can help someone with exactly the same issue.
P.S. I got scared about the comment made about changing the alternator. There is no way I am changing my alternator as long as my car starts and there are no check engine lights buddy.