Those ultra slim ballast units are very unreliable!
I bought the same or similar kit from eBay UK and both ballasts went faulty in just a couple of months.
The seller was very good and sent two more ballast units which were beefier and reliable. I fitted a HID kit to my my older SL500 the ballast units in that kit were full size and have never let me down in just over 5 years.
I bought the same or similar kit from eBay UK and both ballasts went faulty in just a couple of months.
The seller was very good and sent two more ballast units which were beefier and reliable. I fitted a HID kit to my my older SL500 the ballast units in that kit were full size and have never let me down in just over 5 years.