OK -- I'm now all fixed up. Thank goodness.
Tech guy called Beaver Coach in Bend -- their service tech told him the problem was in the Smart Wheel. The Beaver guy in Bend said the Smart Wheel controller inside the panel under driver's arm (have to remove padded panel) provided power to the turn signals, horn, and flashers. Well, turns out the Beaver service tech was wrong. That error probably accounted for an hour and half of time I paid for and should not have. But, you know --- you pay for the time it took. My tech guy called the folks at Smart Wheel and they said no, their SW does not control or feed power to the turn signals, horn, and flasher.
I told him everything was controlled on the outside bay under the driver. He found where a 15 amp auto reset 12-volt breaker was bad. He did not have the part on hand. He installed a jumper to bypass the breaker. I told him that was not proper to do as Beaver warns about bypassing. He said he knew and that I should get it fixed when I get to somewhere that has the part. Otherwise, I would have wait another day or two to get the part and have him come back. He conceded that he could put in a 20 amp fuse in that jumper --- which he did. I hope this will get me to Oregon or somewhere in AZ anyway.
Now I have turn signals, horn, and flasher.
The new flasher I installed myself this morning was not a heavy duty one. I need to find a heavy duty one somewhere. Would appreciate perhaps a link on Amazon for one I can order when I get to Palm Springs. Also, I want to carry as spare parts a couple each of 15 amp and 20 amp auto reset 12-v breakers --- just in case. I presume it's a $5 part.