Since I'm absolutely lousy at posting photos and since I don't have a photo already and since my bike is in the garage and I'm not, there will be no photo.
The handlebar on my Jamis cruiser came with a foam type wrap over the handlebars when I bought it 12+ years ago. I've had to cut sections out to mount various stuff but it came in handy when I mounted the Watts Up meter. Lacking that I would definitely provide something on the handlebar to provide a little shock resistant assistance to the meter. Two zip ties, small ones, one on either end have done a admirable job. Should I need to remove it for any reason all it will take is two little snips. A dab of silicon caulk on either end where the wires come out makes it as waterproof as possible.
A double wrap of an old innertube would be an ideal surface to mount it on. Lacking that a piece of foam sponge. I've long since give up on giving my handlebars a neat appearance. There are two brake levers, throttle, cruise control, computer #1, a horn, a Sony bike radio including computer# 2, holders for the front basket, a mirror and the Watts Up meter. The other horn is mounted below the handlebars. (gentle horn for pedestrians and loud horn for vehicles and other bicycles that don't hear my radio and get out of the way)
So far the Watts Up meter has provided a level of confidence in determining range which makes a long trip much more pleasant. By averaging around 15 MPH I know I can make it twenty miles as I can see that I'm getting almost three miles per AH and I also get an accurate WH count and a constant state of voltage remaining in the batteries. Monday morning I had a very pleasant 15 miles ride averaging 18 MPH and while I forget how many AH and WH I used it was well within a comfort zone. The batteries were still reading 46 volts at rest.
If you have any problems wiring it PM Liberator or ask me and I'll tell you how I did it.
Mike
