Will spec D z33 halo projectors 2003-2005 fit into my 2006 350z

 

Yes

Why would you do that

Wiring will take a little work

 

^^^ This.... soooo much this.

Only ways to go for headlight "upgrades" in order of costs/benefits:

1. OEM '06+ Bi-Xenon (or equivalent Depo brand OEM '06+ Bi-Xenon if OEM unavailable or too costly) - and you have these already so go to next steps.

2. OEM '06+ Bi-Xenon with new projectors (STI-R or other quality lenses)

3. OEM '06+ Bi-Xenon with new projectors, ballasts, 55w bulbs

Still want a halo? Learn more about the above and how to add a halo to the above here: https://www.theretrofitsource.com/

Seriously, don't buy junk just for looks.

EDIT: You'll note that Spec-D doesn't make an "upgrade" for the '06+ Z. And for good reason. OEM Bi-Xenon is king here.

 

I didn't notice it was for 2003-2005 till after i got them. What kinda wiring will i need to do to get them working?

 

Return them.....they are shiite

 

As a confirmed previous owner to the lights I second ^^ This ^^