if the high low problem was there before HID installation, then ur light switch is faulty i guess,
offcourse it will be low then rolla on full beam bcoz rolla has 2 bulbs and we hav only 1,
try to adjust the headlight units to aim the light better on to the road, i will post pictures of how to do that on a 02 civic tommorow, i hope that there is no issue with the HIDs and you are not frequently flashing at night