HID/Xenon headlights replacement for 2017 Terrain - TerrainForum.net: GMC Terrain Forum
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post #1 of 19 (permalink) Old 01-27-2017, 10:10 PM Thread Starter
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HID/Xenon headlights replacement for 2017 Terrain

Hey guys,

I bought a terrain recently and it came with regular 3000k bulbs for headlight but the fog lights are white. Aesthetically it doesn't look good to me so I was wondering if there was anyway I could replace the stock headlights to HID or LED.

I am not an expert in area, do you recommend HID or LED? Also I went in to my dealer and he said a lot of things regarding the lights that I am not sure of... like don't get LED, it might cause issues to the newer terrains.

I read couple of threads regarding replacement and it seems fairly easily. But I am unsure which website to shop on (btw I am in Canada, Ontario) the dealer didn't carry any HID or LED.

Couple of websites that I found are below, please feel free to school me on the danger and issues that I might come across.

HID Extra
Xenon Supply

Thanks
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post #2 of 19 (permalink) Old 01-27-2017, 10:56 PM
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Re: HID/Xenon headlights replacement for 2017 Terrain

I think that either LEDs ot HIDs will work with no problem, but I don't think that aftermarket LEDs have the brightness of the HIDs. You will need HIDs with a CANBUS (basically a capacitor) in the lighting circuit.


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post #3 of 19 (permalink) Old 01-28-2017, 07:40 AM
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Re: HID/Xenon headlights replacement for 2017 Terrain

There are many newer LED head light bulbs that have now attained the performance and light output matching HID.

Xenon Depot and Diode Dynamics have such LEDs for both headlight and fog light applications.

There are now even some LED bulbs that allow for positioning adjustment within the enclosure to match the filament position of the original halogen bulb. That said, with HID or LED there still is the necessity to bore an oversized hole in the dust cover in most instances.

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post #4 of 19 (permalink) Old 01-28-2017, 03:55 PM
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Re: HID/Xenon headlights replacement for 2017 Terrain

It's your vehicle It's your money.

I spent $$$ to change both the head (low & high beams) and the fog lights on my 2014 Terrain to HID. I run mostly unlit state and county roads in southern NJ.

No big difference.

Plus, due to a possibly flawed installation, I was forced to replace the left headlight assembly due to inside moisture. It is my opinion that once factory assemblies are modified - costly problems are invited.

FWIW, I decided to stay with the factory projector headlights on my 2017 Terrain Denali for the reasons outlined above.

Good luck no matter how you elect to proceed.

2017 GMC Terrain<br />V6&nbsp; AWD<br /><br />"Faith Means Believing in Something When Common Sense Tells You Not to."<br /><br />Valentine Davies - - Miracle on 34th Street
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post #5 of 19 (permalink) Old 01-28-2017, 04:19 PM
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Re: HID/Xenon headlights replacement for 2017 Terrain

I got fanless LED headlights in my Tacoma and they are sufficiently bright for city use.

Out in the sticks....you'll want to use your high beams.

I'm probably going to install them in the Nox this summer as well. Just gotta take a look to make sure there's enough space for the cooling fins to fit

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post #6 of 19 (permalink) Old 01-30-2017, 12:47 PM
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Re: HID/Xenon headlights replacement for 2017 Terrain

Please do not consider LED headlights. The fact of the matter is they are nowhere near as useful on the road as halogen. Best case you will have evenly dim output, worst case there'll be dead spots all over.

And hid bulbs in halogen projectors aren't very recommended either as they give you the impression that they're brighter because they make your foreground way brighter, making it harder to see in the distance. Plus, regardless of what people say, they still glare even in a projector.

Quote:
Originally Posted by Default User
I got fanless LED headlights in my Tacoma and they are sufficiently bright for city use.
Oh god. You're blinding everyone on the road. Tacomas and tundras are some of the worst offenders when you throw in the wrong bulbs. Anything other than halogen in those lights turn your low beams into 24/7 high beams

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post #7 of 19 (permalink) Old 01-30-2017, 01:00 PM
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Re: HID/Xenon headlights replacement for 2017 Terrain

Quote:
Originally Posted by fsanti87
Please do not consider LED headlights. The fact of the matter is they are nowhere near as useful on the road as halogen. Best case you will have evenly dim output, worst case there'll be dead spots all over.
[quoteOh god. You're blinding everyone on the road. Tacomas and tundras are some of the worst offenders when you throw in the wrong bulbs. Anything other than halogen in those lights turn your low beams into 24/7 high beams
[/quote]

As per your own post - the LED's are not bright at all. And as I stated, having them in my Tacoma, they are Sufficient in the city - useless on rural roads.

Blinding on-coming traffic has never been an issue / never had anybody flash or complain

Having HID's in there would definitely pose concerns to on-coming traffic.

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post #8 of 19 (permalink) Old 01-30-2017, 03:46 PM
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Re: HID/Xenon headlights replacement for 2017 Terrain

Trust me I see hid & led bulbs in Tacos all the time around town and they're obnoxious, nothing but glare. Just because people don't flash you doesn't mean they're not blinded by them.

OP, before you swap your lights with anything rebased, try an H9 swap. Just have to modify the bulb base and it's an instant boost of ~80% more lumens on the road, and the filament is in the right place so it won't mess with how the projectors handle the light

Edit: forgot to post up a comparison I got from a friend. Locked exposure in H11 projectors

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post #9 of 19 (permalink) Old 01-30-2017, 07:24 PM
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Re: HID/Xenon headlights replacement for 2017 Terrain

Useless comparison, they're not shot from the same location.....

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post #10 of 19 (permalink) Old 01-30-2017, 08:35 PM
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Re: HID/Xenon headlights replacement for 2017 Terrain

What difference does a few feet make? It pretty obvious that it's the same place and that one of the results is a lot brighter than the other.

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