You may be surprised, maybe not, Pat...I like that hybrid 6" HL setup. The larger reflector is a noticeable improvement, in usable light output, over the smaller 5-incher. And the "pilot" light in the reflector, gives you DTRLs, with the stock half-wave/"balanced" electrical system. Had I not found a way to mod my stator array to float the ground and go full wave, that would have been on my bike. That HL setup could be a blessing for a lot of guys with 6v models, especially K0/HK0 owners, since it fits the earlier 5" mounts. FWIW, I used a Jincheng knockoff K0 speedo in my test mule bike; you're right, it was as accurate as OEM. From what I've read, there have been some mechanical failures. I sold mine, by request, with less than 1000 miles on the odometer, no problems to that point. For the price, wtf, right? I mean they're cheap, easily opened if need be...what have you got to lose?
Now, all of that having been said, when/if someone goes to 12v electrics that's when things get seriously interesting. That HL has enough internal depth to hold a "real" HL bulb. An incandescent H4 bulb could be used, with minor modification and there'd be enough airspace to dissipate the heat. I bench-tested a 35W halogen HID bulb, peak temp was 190F, at the hottest spot. That's pretty toasty but, well below the failure point of any parts involved and, that was after an hour, stationary, on the bench...literally. Riding, even slowly, cools things down considerably. With 12VDC power, LED headlight bulbs become a possibility and those have finally become affordable. There's enough room for the cooling fan, or cooling ribbon, depending upon the type chosen. Light output is respectable, better than some cars. I spent $70, which imo is kinda spendy, for a HL bulb. Consider the price of an NOS sealed beam bulb, which in terms of light output, sucks out loud. Is it really that crazy? In my case, the craziness is that I try to be off the road before dark...too many potential surprises. Still, I've got the option and one helluva DTR that never produces a surface temp above 100F, if that.
With the turn signals, LEDs are easily mounted, or "hidden" in plain sight. Single led bolts can be used, for example, to mount the license plate. Those nickel-sized LEDs are so bright you don't want to look at them directly, if you're within reach of the bike. They're cheap, too. They could be used to mount the HL bucket. As I recall, they're about $10 a pop. Electronic flasher relays can be had for ~$40. IOW, there's trick stuff available for very reasonable money, if one is interested. A lot of this comes down to personal preference/taste. I went with the cateye TL because the K0-style wasn't bright enough for my liking. Originally, I was planning to use a license plate bracket, with LED turn signal arrays...a 5-minute bolt-on + wiring project that'd leave everything else stock-appearing. These setups aren't even the tip of the proverbial iceberg, in terms of what's now available and the options just keep getting better. The lone fly in the ointment is that they all require 12VDC. That leaves anyone with a 6V electrical system out in the cold. Conversion is possible but, that's where simplicity heads toward the exit. A lot of owners already have 12v electrics, that came with a later engine...including the Chinese lumps, which are all 12v/CDI.
In case anyone is wondering why I've gone so far afield, there is a logical reason...beyond my natural long-windiness. When I began looking for better lighting options, years before LH existed, LED tech was decidedly "not ready for primetime"...not that good and extortionately pricey. At one time, the best LED headlight was a CREE LED, yours for everyday low price of $600(!). It's been a frustratingly long, painstaking, R&D process, to which hardly anyone would really give much thought, let alone care to replicate. I'm now passing along the "Cliff's notes" version, for those who might be able to use it...without having to invest a lot of years & dollars.
If your bike has the K3-`79 HL ears...the ones that have the holes to mount signals, this is about as plug & play as it gets with aftermarket signals. If you ever break one, just buy another...very unlike the originals and their unobtainium parts. If your HL ears lack signal mounts, go for clip-on mounts, one for each handlebar. I'm not that fond of mounting anything but a headlight bucket to HL ears...and far less so when it comes to punching holes in them.
The blinkers with the black you posted will not work.
