Had the same issue with my kit when I first got it. If you have to flip it on and off several times to make it start, it's a bad ballast. Power harnesses have nothing to do with your HIDs working properly. I have JLM which I been running past 2 years straight plugged in directly to the headlight power wires and they're just fine. My recommendation is get another kit from "reputable" source (Amazon) so you can at least return / exchange it if something like that happens again. And get 2 kits that way you got spares.
