Check out the sticky
thread in this (Trailers) forum. Electrical Connection made a universal harness. I think they still do but not sure since I cannot look on that web site from work. There is a link to them in that thread. Even with a pre-made harness there is still some electrical connecting you would have to do as there is not a plug-n-play harness available unless you ride a Gold Wing. There are a few other sources for a universal harness. All the good ones will get power direct from the battery and only tap the bike electrical for trigger signals to avoid the nasty issue of electrical problems that can happen doing that. I made my own and posted about it in that thread. But I know how to do electrical wiring and it costs me much less doing it myself.