Distinguish : (1) visual signal lights at both ends electrode has a serious depletion phenomenon. (2) visual ceramic has been broken, or breakage. (3) Are there silk sight fracture. (4) Are there visual lamp broke breakage. (5) Are there visual lamp column fracture, breakage. (6) Are there visual lamp loosening unstable phenomenon. (7) Are there visual Base fall off phenomenon. (8) Are there visual fall off the electric light bulb phenomenon. (9) Are there cracks or broken signal lights visual phenomenon.

Test : (1) take a good Ballast (stabilizer), as the benchmark test HID lights. (2) preparing a power supply, voltage reference voltage adjustment to 13.20V testing. (3) accept all properly wiring are first, whether such power that light bulb test. (4) If such power can not be turned on HID lights, he said HID to damage.