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Old 04-16-2012, 07:49 PM   #1
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Do I need a relay harness for HID's?

Hey guys, I just bought an HID kit for my 2009 focus headlights. Will I need to run a relay harness or can I use the stock harness?
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Old 04-16-2012, 08:41 PM   #2
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Stock will work fine.
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Old 04-16-2012, 08:43 PM   #3
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Thanks
I'm looking at my kit. The 2 plugs fr the bulb go into the 2 plugs on the ballast and the plus from the stock harness on the car goes into the ballast right?
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Old 04-16-2012, 08:55 PM   #4
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HID kits dont pull any higher wattage than normal light bulbs (expect in the 35 to 55W range).

your instructions sound right, but, there was none included in the kit?
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Old 04-16-2012, 08:58 PM   #5
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Nothing lol

I just got the 3 prongs into the spot where the old bulb go but they do not stay on place.
Does anyone know which wire on the stock harness does what? There are 3. I know one should be ground, the other night time and the other DRL, just not sure which is which.

I could cut off the stock harness plus and hard wire the hid harness
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Old 04-16-2012, 10:21 PM   #6
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you have 3 wires; black w/Green and Black w/Violet is ground, brown w/Blue & Blue w/Green are Low Beams, Yellow w/Violet are High beams.
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Old 04-16-2012, 11:12 PM   #7
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Got them.
The prongs from the HID bulb harness don't stay inside the stock headlight bulb harness so I'll have to wire them right into the stock harness wire behind the plug tomorrow during the day. Thanks man
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Old 04-17-2012, 07:02 AM   #8
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That's why I use relay harness. To avoid splicing into factory harness
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Old 04-17-2012, 09:22 PM   #9
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So I installed the HID's today and I thought all is well untill I realized when my DRL's are on the lights flicker like crazy and then shut off.
Anyone run into this problem? And what are my options to fix this?
Thanks
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Old 04-17-2012, 11:05 PM   #10
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DRLs got it, Get ahold of the company you got the kit from and ask them. Most of us dont have DRLs and the problem rarely comes up. Might have to get a relay harness. I have one im not using if need one cheep.
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