I got the kit from zzp.
ZZ Performance[/QUOTE]
^^^This is due to lack of proper voltage getting to the HID ballasts...the stock wiring on the GP SUCKS...the HID's pull more power than stock headlights at initial startup...and stock wiring will not handle it...you MUST get an upgraded harness...I have never seen/used the zzp one...I don't know if its the single HID, Bi-Xenon (HID lows & highs) or the combo HID (low)/halogen (high) setup but either way the single best place to get an upgrade harness hands down is here:I have this problem where sometimes when i turn on the lights one or none of the headlights turn on right away. I sometimes have to turn the headlight knob a couple of times to work.
single HID HARNESS: 3B Specialties : HID Relay Wiring Harness
BiXenon HID HARNESS: 3B Specialties : HID Bi-Xenon Relay Wiring Harness
if you need an HID low and Halogen High harness which I don't see listed on their website...just email them or call them and tell them what you have and they can probably help you.
As far as reference to which wire is what...you will need to use a DMM (digital multi-meter) which can be bought at walmart, lowes, home depot, etc. (cheapest will work for this if you have no plans of using one again any time soon....I have a nice one as I use them fairly often), to check what wires are what....you'll need to ground the black lead on the DMM to the chassis of the car (unpainted metal to ensure good contact) then with the headlights on (low) use the RED lead from the DMM to probe the stock wiring harness to find the "Hot" wire. now turn the high beams on and re-probe the harness again until you find the "Hot" wire. Once that is done the only one left is the GROUND wire....now just compare the factory harness to one of the vehicles headlight bulbs to find out which spot/contact on the Bulb/HID connector is for the low beam and which is for the high beam. I am not sure you will need to do that as it sounds like its wired properly, but isn't getting the voltage it needs.The instructions didn't say which is high/low beam and which one is constant power. I was guessing that the constant power was the middle input on the factory headlamp socket/harness. What type of relay would i need to rewire these HID's, knowing that the instructions call for a 20a fuse.
Hope I made it simple enough to understand and hope it helps ya! Oh and I have the above single HID wiring harness and its a great product...I highly recommend it.