HID installation into 2015+ sedona w/ Halogen headlights - Kia Forum

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post #1 of 27 (permalink) Old 07-08-2017, 11:59 PM Thread Starter
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DIY: HID installation into 2015+ sedona w/ Halogen headlights

After seeing a couple of threads asking about aftermarket lighting in the stock halogen headlights, I decided to share my experience with putting HID ballasts in our vans. I'm not an expert, but I have done my fair share of HID "retrofits" in several vehicles, including full HID projector installations in headlight housings.

To begin, Kia chose an interesting way to mount the H7 bulb in the headlights; rather than the usual metal retainer to directly lock the bulb in place w/ a separate socket to power the bulb, they chose to use a plastic socket with integrated "holder" for the bulb - this assembly would then be locked into the projecter housing. This presents a couple of packaging problems as 1) you have to either cut or retain the bulky plastic holder with the HID bulb/capsules, 2) have to modify aftermarket HID capsules with a separate plastic retainer, and 3) are limited to HID capsules or LED bulbs with flexible heatsinks if you want to keep the factory headlight cover.

Now that's out of the way, onto the pictures. 1)First, is the stock low-beam (right) vs. HID (left) - I chose 4300k temp.

2)You'll need to a basic H7 HID kit (w/ capsules and ballast) as well as the plastic holders to allow them to go inside the projector - the latter are readily available on Ebay for about $5 - search Kia K6 headlight holders. Make sure they are this shape.

3) You will need to attach the H7 capsule/bulb onto the holder - given how my H7 capsule was bundled with a silicone plug and ballast power wires, I chose to cut a slit in the holder to get the capsule in the center.

4)Line up the H7 capsule tabs on the holder and use high-temp silicone adhesive to bond it into place

5) drill a 1" hole into the OEM rear bulb cover and make sure to cut the back ribs flush so the silicon plug can fit snugly; you can buy a second set from KIA for about $14 each.

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Last edited by rougeben83; 09-08-2017 at 12:39 PM. Reason: title
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post #2 of 27 (permalink) Old 07-09-2017, 12:39 AM Thread Starter
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6) Test fit of the HID plug inside the rear headlight cover. To ease installation, it's best to NOT have the rear cover installed on the plug while you're trying to slide the capsule inside the projector; run the plugs and wires through the hole inside the rear cover AFTER you finish everything inside the headlight assembly.

7)Time to install the HID capsule inside the the headlights. Some tips:

-makes sure the capsule glass is clean and grease free
-the aftermarket holders are more flimsy than OEM - make sure all 4 tabs lock into place and is securely installed in the projector. Initially, I was wondering why my beam pattern and light output were way off when I first installed them, it turned out the holders did not seat properly and came loose after I buttoned everything up.
-if you chose to keep the OEM socket/holder inside the headlight assembly, there is enough room to slide it under the capsule.

8) I chose an easily- reversible installation. Insert the wiring harness for the ballast into the OEM socket/holder - HID ballast are polarity sensitive, test fire the ballasts to make sure your wires are oriented properly before wrapping the wires in electrical tape.

9) Slide the HID wires through the hole in the rear cover, fit the silicone plug around the hole and refit the rear cover to the back of the headlight. You can mount the ballast where ever you like, depending on what you have. I chose slim ballasts with a separate igniter module - these were securely mounted to the underside trim of each headlight assembly.

**IMPORTANT** the stock headlight wiring is terrible - I had severe flickering issues when the ballasts were fully powered up. You have 2 options - run an separate relay harness for the HID (being triggered by the stock socket) or get capacitors to even out the voltage to the ballasts. For the purpose of this guide, I chose the capacitors ($10 at various retailers), however as I have a spare wiring harness, I plan to go with that when time allows.

10) Done.

11) headlight output.
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post #3 of 27 (permalink) Old 07-09-2017, 12:47 AM Thread Starter
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Beam pattern. Being a halogen projector, its not terrible, however you can see two focal points where each light concentrates (hotspots). Beam cutoff isn't the sharpest, but coupled with the diffused "squirrel catchers", glare is controlled. I lost the stock beam pattern pic, but its very similar to the HID. However, the limitations of the lenses KIA chose are much more apparent with the extra light output from HID's.
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post #4 of 27 (permalink) Old 07-10-2017, 09:43 AM
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Nice write-up. I might just tackle this one of these days. I've never installed HIDs, but done plenty of other lighting and wiring projects.

Since you've done quite a few HID retrofits, are there any brands you recommend, or a trusted online retailer?

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post #5 of 27 (permalink) Old 07-11-2017, 07:52 AM Thread Starter
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Originally Posted by mletchworth View Post
Nice write-up. I might just tackle this one of these days. I've never installed HIDs, but done plenty of other lighting and wiring projects.

Since you've done quite a few HID retrofits, are there any brands you recommend, or a trusted online retailer?
Thanks, I've had good luck with Morimoto projectors/shrouds, and DDM tuning ballasts - good value for the money. Of course, OEM from the junkyards Try to avoid the generic "ebay" stuff as the quality is very variable.

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post #6 of 27 (permalink) Old 09-08-2017, 11:44 AM Thread Starter
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Just an update. I've decided to keep the capacitors in place - there's no easy way to get reliable ground to a separate wiring harness for the headlights as the front radiator frame is bolted to the van via plastic (!) brackets. I would need to run wire outside of my loom to ground to the fender, leading to a less-than OEM looking install.

Also, in hindsight, you probably don't *NEED* to do step #3 in my walkthrough - I think with enough persuasion, one can push most of the plastic connectors through the hole in the K6 holder.

Finally, as an update, after 2 months, the headlights have been working perfectly with no misalignment or decrease in performance.

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post #7 of 27 (permalink) Old 09-08-2017, 12:08 PM
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That works very well! I'm about to do mine now that outside temp is starting to cool off a bit.
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post #8 of 27 (permalink) Old 09-13-2017, 03:03 PM Thread Starter
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Great let us know how it went. I'd love to see other people's experience with this, as well as any notes to improve the installation process.

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post #9 of 27 (permalink) Old 10-09-2017, 09:10 PM
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hi, i did this to a buddy of mine in his 2018 sedona, don't have to have a slit on that bulb holder, it will make the hid bulb go out of focus like the passenger side that you have..
or maybe have superglue between the bulb holder and the H7 HID base to make it stay while putting them in..
what i did on the base is to just have the female 9006 harness slip through by taking away the plastic that was encased with it or just trim the side..





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post #10 of 27 (permalink) Old 10-15-2017, 07:17 PM Thread Starter
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Where did you get your adapters? Yours look much better quality than mine, particularly the way it holds the capsule.

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