Don't go higher than 6000k or lower than 5,000k!!! Get Bulbs and Ballast as I did,takes 20 minutes for left and right side ,east DIY Project,all are Good ,I spent about $40 for the kit ,cheapeer that Sylvania ZXE and muckh brighter too,I did fogs a month later , same DIY easy and $40 again !wire tie and tape with heat resistant tape away from radiator and eng areas ! Works great and bright a year later, I did 6,000K Fogs and Low/High Beam headlights ! All brands are the same and from china with German technology or you would slpend $1000 and up on each side !!!!!