HID install for Audi A4.
If you were one of the people who bought a HID kit from Waterfest or H2Oi, and had trouble figuring out how everything connected, like me, then you’re in luck, I figured it out. That’s why I created this DIY write-up. I would like to apologize for any grammar mistakes.
What you need:
Torx (T30)
Ratchet kit
7/8 spade bit
Wire cutters
Tons of zip ties
Drill
Electrical tape
Any wire terminal/connectors
1) Spread HID kit out like the picture below, helps to visualize it.
2) Basically follow this write-up to remove the headlights and drilling holes and blah, blah, blah. http://www.sharphid.com/installation/audib5a4.htm.
3) So once you’ve taken the headlight off, it’s time to drill some holes and mess up your headlight, just kidding. I used a 7/8 spade bit it was perfect for this kit, nice tight seal. So go ahead and take the low beam cover off, drill the hole, you might need a rounded file to smooth the edges.
4) Take the bulb with the cover still on it to prevent from breaking and you touching the bulb itself. Pull the wires and any plugs through the hole, might need a little muscle to get plug through, for this kit. Then push the grommet through the hole and start pulling on the seam to go around the hole for a nice tight fit.
5) Plug everything back in the headlight. Now it’s time to find a location for the ballast, place where it will not get wet but have an easy access to just in case, you need to fix it or something. The ballast was too big to fit under the headlight so I found other spots. Since I have a FMIC, I used the old SMIC mount, for the driver side. The passenger side I found this spot where the ballast sits nice and tight.
6) Use zip ties to attach them to these areas.
7) Now put the headlights back in, make you connections first before actually bolting them back on. Follow the diagram from above, for wiring. Run the power through the secondary firewall, there’s a spot where there is a rubber grommet, just cut off the tip and run the wire through. For the ground, since it’s a short wire I used a bolt that holds the fender on. I notched the rubber seal for the fender. You might need wire cutters to cut the metal wires in seal.
8) Now when it comes to the OEM harness part on the passenger side, connect the HID harness (Green and Black) to the OEM harness (where the OEM would have connected to). I connected the Green to Red and Brown to Black.
9) Then connect the Green and Black wires from the HID harness to cap on the harness. Or just cut off the plug, wire it up that way.
10) Before finalizing anything give it a test run. Finally bolt the headlights back on, and zip tie any extra wires. I tried to hide the wires the best way I could for a nice clean look.
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