Ok, I searched on here, didn't see much at all tbh.
I just changed over the sealed beam headlight I had on my bike to an LED unit [had to buy a new lens as well, but nothing wrong with my old lens] and the difference was very impressive..so thought I might do the same for the Skyline.
I also had a look on ebay and there were so many LED headlight 'globes' it was overwhelming. Most promise a gazillion watts/lumens/K but all look pretty much the same - admittedly some have little fans, others have heatsinks on the arse end, some have rats tail H4 connections, others the spade H4 straight off the back...………..but I have no idea if these changes are better or worse. And it looks like you can get a pair of LED's for around $30 [and certainly under $50] delivered, so cheap really.
I am still using normal halogen bulbs, with the yellowish, not so bright light and so thought I'd try an 'upgrade'. I know others have used 'white light' globes from the likes of Phillips etc that cost more than they are worth and I'm not that keen to go down that path anyway. I also bought a HID kit years ago...and then never ever fitted it, its still brand new in the box [probably need to sell I guess].
BTW on the operating temp, there was a great test done by a guy on a motorcycle forum where he tested a normal globe, a Halogen globe, and an LED [with little fan] setup using an infrared temp gun and the LED came out way cooler all round. That has to be a good thing.
And finally { I have no idea on this] is it legal?? I can't see why not if they are a direct replacement, offer the same or better light, and operate much cooler than halogens anyway.
So does anyone have any experience at LEDs on a vehicle? What did you end up with? And was it a better light?