Mine is a '95 also but all K75s are pretty much the same.
The Kuryakyn has double-sided tape or some such on the back and I used that for the mounting. I drilled something along the lines of an 1/8" hole in the dash pad to run the wires. They are pretty small, maybe 18 gauge.
You can't really see it in the picture but I have installed a radio in the lid of the left-hand fairing pocket (you can see the brass piano hinge that holds the lid on). The volt meter is wired into the hot and ground wires for the radio. It is hot when the key is on just like the rest of the instruments.
Let me know if you have additional questions,
Tom