Today i bought ....
They are usually plug 'n play.
They work like an old fluorescent light (sort of) in that they need about 20kV to fire them and then they run on almost nothing.
It's only a big job if you want to install RHD projector units into your existing housing - it gets a bit mastic-ky..very sticky.
I quite enjoyed messing around with lights on Civics and Preludes...NSX has HID kit on its original projectors.
They work like an old fluorescent light (sort of) in that they need about 20kV to fire them and then they run on almost nothing.
It's only a big job if you want to install RHD projector units into your existing housing - it gets a bit mastic-ky..very sticky.
I quite enjoyed messing around with lights on Civics and Preludes...NSX has HID kit on its original projectors.
Yeah wiring comes as a kit - there is a seperate relay harness that comes direct off the battery, one of the original H4 car leads works as the signal generator for the kit. I've done this before, admittedly a while ago but in itself it's time consuming not complicated - at least not if you know how to do it. This kit is good as it includes the doughnut gasket that sits between reflector and H1 projector and then there is the metal H4 adapter plate that fits the back of the headlight reflector and a large nut that compresses it all into place. You can't fail on alignment as the H4 mount deals with that. H1 lamps are narrow fit so go through that into the H1 Projector without issue.
Lights are easy split with a hairdryer, the challenge is balancing heat with gentle levering pressure to split them without cracking them. I refuse to use an oven in case something deforms.
Lights are easy split with a hairdryer, the challenge is balancing heat with gentle levering pressure to split them without cracking them. I refuse to use an oven in case something deforms.






Love that little locator peg for the caps. Nice job UF admire your skills 
Been there / done that with reusing the old stuff, it's best to just replace it and then you get a watertight seal.