I would suggest adding a relay setup to each headlight harness. Run the higher amp draw of the two beams off GND and the Positive terminal of the battery, and use the + and - from the offending beam to trigger the coil between connector 85 & 86 on the relay and run the Postive from battery with a 15 amp in-line fuse(14-12 awg wire minimum) to 87 and 87a to the headlight this should solve your problems, without haveing to up the fuse amp which can lead to a serious fire hazard. They should have came with a relay, so should his HID kits.
Just my 2 cents