Well thanks to this thread, and Frogger and TT, I absolutely broke the bank last week and ordered a $63 CarPlay unit made in China by Camecho. Just finished the install so haven't ridden it yet but I have to say it all works quite nicely. Here's the (few) Cons, then the Pros, mostly as compared to my new doorstop, the 15 year-old Garmin Zumo:
Cons:
-The Zumo showed elevation, which was kind nice, but I'm sure I can find an app...
-The Zumo was a quick (one second) disconnect. On this unit you have to unscrew the waterproof connection, which is on about a foot of cable attached to the unit. And when you screw it back on the inner piece must be aligned rotationally perfectly, probably not easy in the dark. But then again, it only costs $63, maybe I'll never remove it...
Pros:
-Well, it's CarPlay. I'm iOS, but even if you're Android you'll know that it does pretty much everything CarPlay does in your car. Pretty sweet.
-Screen is excellent, great definition. I'll post more after a ride.
-I hooked it up to the GPS power source Ducati provided but hid behind the bodywork, just as I had for the Zumo. I left a 2 amp fuse in the line just in case, probably overkill since it's fused anyway. I spent most of my install time just getting the wiring how I wanted, making sure the wires didn't foul movement at full lock, or get rubbed by any other part.
-It paired w my phone in maybe 10 seconds. Paired and works seamlessly.
-I'm not really a listen-to-music-while-riding guy, but maybe I'll install the Scala unit from my old Arai. We'll see.
Hey, can't beat it for the price, 10% of the cost of my Zumo, not adjusted for inflation.