Problem solved - FYI - There is no fuse, and all wires were connected.

Turned out that there is a small screw with a jam nut on the bottom of it (on the back of the horn) and once adjusted it started to work. It didn't sound as 'manly' as I liked, so I replaced with a car horn I had in the garage.
Works fine.

Thank you for the response.
I'm familiar with the mechanical workings of CVT systems (had a few golf carts, and go carts). I assumed the 'tip in' would be at a lower RPM on a larger more expensive machine then it was on the golf carts.  It was easier to slow roll my EZGO Workhorse then my new Moto, and I sold the workhorse to help fund the moto. (Seems its just something that will require lower expectations and not lower RPMs.) 
On the Low or High gear question, if I run this around in Low, the jerky / touchy gas pedal and the quick slow down rate after releasing the gas pedal are a bit annoying. Anyway to adjust that?

Assumed that if I had the button, I had the horn(s).... but....

Thank you for the quick reply!

Silly question, but... does the 1000 come with a horn? (Dealer wasn't sure.) There is the switch on the dash, but I get no horn when pushed.  If there is one, where is it? (I can't seem to find it!)

Thanks,
~Larry

Just picked up my 1000 this past weekend. a couple points / issues. The manual says to run this thing around in L gear most all the time, which certainly does make the go pedal VERY touchy, and running it in H gear, I can smell the belt at the lower speeds. Has to be a fix to adjust the sensitivity of the go pedal!  I will be following with interest....
~Larry

After hunting across three states, found a new (2021) Uforce 1000 and picked it up on Saturday. I have a few issues / questions.... So I'll be posting in the relative areas. 

~Larry