I got a set of these from Cyclemax, more than long enough, even threading thru my backrest mounts (Markland, if I recall.. PO added it.)
Whether you get these or make your own, the tapered end is a big help.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪
~Mark