it can help but usually capacitors are inside the ballast, if you just change a regular 9006 bulb, there should be no errors as long as the wattage is the same, we carry 9006 in many types and colorsHey guys, I just installed 9006 hid kit yesterday and an error popped up (fog lamp malfunction). Do I need to install anything else? I spoke to the seller and he said to install a Capacitor. Will this help me? Do I need to check my fuse and bump them up some?