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Guessed this was the write category if not just move it please admin

So a there's no really good write up on installing gtr headlights into a gtst

Going from h4 to h1/h3c

I've pretty much worked it out. As someone did a bad hack job in mine and it doesn't work! I have no headlights highbeams are constantly on etc

Question I have is what's easier to fit hids too the h1s or h3c headlights

Cheers in advanced

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https://www.sau.com.au/forums/topic/454788-gtr-headlights-hid-fitment/
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I strongly recommend you read this thread:

http://www.sau.com.au/forums/topic/93963-xenon-hid-lights-conversion-for-r32/

If you're planning on throwing some cheap 6000+ Kelvin HID kit into your standard headlights, you're going to have a bad time.

Been there done that. To answer your question, you buy the bulb for the housing, e.g. if your headlights take H3C, then you buy H3.

Wiring wise it's pretty easy. Use a multimeter/test light if you must to figure out which bit on H4 plug is low and high (or can Google/Bing it).

Rip out all the old stuff and go from there.

No matter what kit you put in the standard projectors, the light output will be shit (thing pencil beam with lots of scatter).

The $30-50 eBay kits from China will die in a couple of months. The more expensive ones last a bit longer.

The kit I currently use (2 years running) is a fast start one that was almost $200. The equipment from The Retrofit Source are so cheap these days, you'd be fooling yourself not to buy from them.

Opening the headlights and changing the projector is a lot easier than you think. I did my second (current) pair of headlights within two hours.

The link I provided gives you a couple of options (including mine).

The difference between a retrofitted and a standard headlight with HID kit is so massive, you'll have to see for yourself (put cheap HID it into standard headlight, then go park next to a car with factory HID lamps).

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