bi xenon help

Well I installed a 55w hi/lo kit from ddm w/ harness and hi/lo ciontroller. everything went together fine with a few issues a first timer is bound to run into. Took me about an hour. Look great super bright and not blindingafter i adjusted them. When i switch from lo to hi it works fine. when i go from hi to lo the bulb goes out for a second or maybe .5 second. I called DDM and they said it was my truck cutting power from hi to switch from lo. Im running the relay harnes so my frontier is only sending a signal. the lights are being powered dirctly from the battery. Any suggestions on what it could be or how to remedy it. Ill eventually get some pics up. i havent swapped the fogs yet, lastnight i was playing w/ the driving lights.