It doesn't get any cheaper than this!
I bought my Road Glide in early spring of this year and the first time I rode it at night, I knew I had to do something about the headlights. I was going to go with SilverStars (or the like), but at $60 retail, I thought I would look for another option.
The H-D Daymakers and even the Chinese knock-offs are still more than I'm willing to pay for headlights. Not that I'm poor (or cheap), but I'd rather spend my mod-money elsewhere on the bike.
My first attempt were these from Amazon:
Stark 80W All-in-One 360į LED Headlights (H4 / HB2 / 9003, 6000K White)
These are BRIGHT! At the last Bike Night I went to in October, when I turned on my bike to leave, three ladies talking nearby jumped when the headlights came on. I'm not kidding, they're bright.
But........ The beam pattern sucks!
Because the light is emitted from two sides of the triangle (on low beam) and over a large area, the headlight reflector scatters the light rather than produce a focused beam with a distinct "horizon". This is because the headlight reflector is designed for an incandescent bulb which produces light from a very small area at a specific focal point.
Second attempt... SUCCESS!!!
I picked up these off eBay:
2x H4 HB2 9003 180W CSP LED Headlight Kit Hi-Low Beam 6500K Bulbs 18000lm Lamp
Probably equivalent to these on Amazon (I'll get to that later):
NIGHTEYE H4 LED Headlight Conversion Driving lamp Bulbs 6500K Cool White 50W 8000LM Hi/Lo Beam
I installed them (the ones from eBay) yesterday and they are EQUALLY AS BRIGHT as the first set of (Stark) LED bulbs I tried. But since these are designed to more closely mimic the light from an incandescent filament (specifically from an 9003 bulb), the beam pattern is significantly better - almost perfect on low beam. The high beam pattern has a few "less bright" areas, but not enough to call this a failure.
My only "complaint" is that their claim of 16,000 lumens appears (by my eye) to be grossly exaggerated, but since they're about equal to the other LED bulbs I tried, I'd say that they're probably equal to the 8000lm bulbs (assuming it's more honest) in the second Amazon link above (as well as being identical in design and similarly priced).
I really wanted to get in a night ride yesterday and get some pictures, but the weather turned to crap before it got dark.
All of these LED bulbs get hot at the base. Incandescent bulbs get hot as well, but at the bulb, not at the base. The first set of LED bulbs had cooling fans, but this new set do not. I ran one of the latest set of bulbs off a battery for about 5 minutes and the heat sink was warm to the touch. not hot, but a bit warmer than I expected. I'm hoping the heat doesn't become a problem in the summer.
I'm sure the Daymakers get hot as well, which is probably why they add those metal brackets to help support the fairing mount points for when the plastic fairing gets soft from the heat.
Advantages over Daymakers:
I'm not a fan of projector headlights, personally. Maybe the Daymakers are better, but my wife used to have a 2005 Subaru Outback. The projectors on that didn't illuminate the overhead highway signs on some of the rural highways we used travel. These bulbs will allow at least some scatter above the "horizon" so you can see the signs.
If you're thinking about going this route, make sure the LED bulbs you buy closely mimic the 9003 incandescent bulb (or whatever bulb you're trying to replace). Headlights are much different from brake lights and turn signals when it comes to bulb design. Be sure to look for ones with a long thin row of LEDs and, for the 9003s, make sure they have "cups" under the low-bean LEDs.
Also, there are a lot of older, less-powerful, less-efficient LED bulbs out there. Although the advertised light output may not be accurate, try to go for the highest light output you can get.