I'd like to increase visibility well beyond the stock foglights without seriously affecting the bike's aesthetics. Anyone running these or have opinions on the D3 vs. the D4 or equivalents? The fender-mounted DRLs look interesting too but only to supplement the D3/D4, which might be a bit much.
I can’t speak to the Denalis. I put Clearwater Darlas on my T120. They throw a lot of light and I like the ability to adjust to intensity. Nice package.
Color? Clearwater doesn’t presently show the TS660 on their website, but if you call them they’ll know which kit fits and works. As far as I know the Darlas are all black, unless you want chrome bezels. Mine are fork-mounted just below the front fender, but there may be other fitment options for your bike - and you may prefer, or it may be recommended (for your TS660) another Clearwater light beyond the Darla. I’m pretty sure some use multiple pairs of lights in some instances, for instance they may run the Krista’s, with the Darlas. How serious do you want to get? I did later order the slip-on covers with the amber lenses. Ideal for fog. Come to think of it, I ought to be changing the clear lenses for the amber lenses again, now that September is here. I had my dealer install these and think they’re worth every penny. I bought them to be seen, and I cannot exagerate how well they work at moving caters over out of the left lane when I’m closing on them from behind. That’s true safety enhancement right there, as opposed to rolling up behind someone who refuses to concede that left lane to faster moving traffic. And if they won’t move over at night, I can wick up the intensity of the beams a bit and they’ll get the message or get tired of the lights in their mirror. Fewer interstate lane changes equates to safer riding, especially in the big city. And yes, they do light up the ditches , even when wicked down for nighttime riding (so not to be obnoxious, like with high beam on), and it’s like daylight when they do go 100% full-on with the high beam. If you can swing it, I don’t think you can do any better than the Clearwaters, whichever ones work for you. Absolutely nothing not to like.
Ah, slip-on lenses, nice surprise. The Denalis come in either clear, amber, or selective yellow (no idea why "selective"), but are swappable only with tools. I was leaning toward the yellow for greatest daytime visibility, though at night they may take a bit of getting used to, based on videos I've seen of the amber ones. The Clearwater approach solves that nicely. I assume the Clearwater has the same issue as Denali in that a model-specific canbus unit isn't yet available. I'd really like to be able to integrate the running lights with the turn signals and horn, all on a single switch, though your comment about ramping up the intensity behind slow movers has me rethinking that.
If properly and professionally installed and wired in, I think your concerns would be alleviated. As for the amber lenses, no adjustment needed from my perspective. Unless I’m seeing reflected light, I can’t tell so much that they are amber or clear. Almost tempted to leave the amber lenses on it, but they are easy enough to change. The slip-ons protect the primary lenses from stone damage, so considering the alternative, I’m keeping them on, whether with the clear or amber inserts. Well thought out kit.