Any on here runs hids from there factory headlamps. Before I switch to hid the regular halogen lights don't shine for ****,can't see anything but if I use my fogs it makes it better. So I order hids and it'* like the same as the halogen not bright at all. One issuse is thst it sees light the bulb is a lil longer then factory bulb it wont turn to tighten .Anyone have that issue . I might run hid in my fogs I no that will make it shine better. I should off too a pic. I had to tape the sides so it will stay.

I got a 35w HID kit from DDM Tuning, had to come from Japan, but the difference was amazing.
You have to be careful when wiring them up, some cars + and - are reversed at the harness, so you have to plug the harness into the ballast backwards.
Also I do not recommend their error eliminator, because if you are unsure whether or not your harness + and - are reversed, and you plug it in wrong, then it can explode!
I am lucky my hood was down when mine exploded, it sounded like a shotgun going off, scared me quite a bit, I can see it putting an eye out or worse.
Without it my panel that shows all lights would show a red light like the headlights were out, but they weren't.
Also with the 35W kit you do not need the wiring harness/relay, just the ballast mounting brackets..

https://www.ddmtuning.com/Products/D...ast-35W-or-55W

It looks like they have a Cali Distributor now...

NOTE: They are quite bright, and without the proper focused HID lighting headlamp housing, you will possibly blind others, I only drive at night in areas where not a lot of people travel, so I was not too concerned..

Be careful with those if the bulbs are not securely in the light sockets, they get really hot, and could easily melt that plastic, and maybe cause a fire.

The hid ballast has the cancelation on no Need for the relay harness just like the link u sent me same ballast and if you hook it up wrong will it still light up I'm not sure if I hooked it up right cause I didn't it to exploded or something I should of took a pic before I installed them. Did you use a wire relay if so maybe that'* y they are bright.

I did not use a wire relay, not for the low beams because I went with the 35w HID, you really don't need the relay for the low beams, but if you replace the high beams with the 55w HID'*, then you'd want to use the relay/harness.
As hot as they get I'd not suggest replacing the high beams with HID'*.

Really the best way for these to work is to retrofit the headlamp harness, there are videos that help you do it, but it is not a easy job, and once you start retrofitting them you are going to destroy the headlamp housing, so you really would want to buy 2 new headlamp housings, and try to retrofit the old.
You really need to get them focused by retrofitting in a projector to have them hitting the road as bright as they should, otherwise the light will be in too broad of a beam, and won't work as well.





Those should give you an idea of how it is done, it is quite a bit of work, and can be messed up easily, which would be costly.
Some places sell the headlamps already retrofitted, but I am not sure if you can get them for your Denali...

Look at some of these on E-Bay, I know they are costly, but it would be better to have them.
Then when time to get an inspection done you could throw the old ones back in so you pass, unless that is not necessary where you live.

00-06 GMC YUKON XL DENALI SIERRA 1500 2500HD PROJECTOR HEADLIGHTS | eBay

My factory headlamps are projectors .it'* like the hid lights are the same light output as the halogen not bright at all. The bulbs wouldn't lock in the headlamp it'* like the bulb are all longer then stock light. It sucks cause I really wanted hids and now it'* like it a waste of money.

Ahhhh ok, did not realize yours had projectors.

Did you know modding your headlights like this is in violation of DOT laws?

Yup, that is why is he retrofitted them I suggested getting a spare pair, that way you can still pass inspection.
I have been lucky where I live, the cops never pull me over for them, of course I live in the country will less traffic.

I think it is stupid you can get them on a factory made car, and it is fine.
But if you mod them yourself, even if the results end up the same as factory legal HID'*, they still won't pass DOT standards.

Well I email the seller he said all the bulbs are like that basically the bulbs won't fit due to them being longer that'* stupid but hey im glad I only payed 20 installed of 100 plus