Mark,
There are several ways to do them, you can use metal straps which is what some guy's do but I used alum. tube. Sorry I don't remember the size but I bought alum tube that the wire would fit into and flattened the end of the tube and drilled a hole. Then I added a small nut (2-56 I think) over the wire and another short piece of alum tube and epoxied it all together. I bolted the alum first to the horiz and vertical tail then roughly sized up the wire length and cut and then inserted with epoxy, that way I got the correct length. Inserting picture of real cub and mine. I really didn't have to add the sleeve above the nut, don't know why I did that but oh well!