Im using H11 8000k with 55watt ballast for 3 months now no trouble so far
I had used 35watt hids in fog lamps of vitz 2004 for 1-1/2 year with out any problem with relay
U can use a relay for proper current flow/wire protection
Ive heard that 55 watt hid or 100 watt bulbs are bad for fog light housing
Go for 35 watt
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