ok first off you dont need capasitors thats what the relay harness will fix! what happens with a lot of these kits is that you can plug some of the connectors in 2 ways. there is a top and a bottom to the connector but when you plug in the 2 prong plug into the ballast switch it around! turn it upside down and try it like that. i have had this problem twice. its weird. let me know if you dont understand. but take the plug that goes from the bulb to the ballast and rotate it 180 degrees and try it again! these plugs will go in both ways. i bet this is your problem.