Don't know of this adapter you speak of, but I have the leatherlykes on my 1300 retro, best damn bags I could have got, worked great on the RAT, I stored things when others couldn't......I will be selling my bike soon, maybe you want to buy mine..........(cheap)?
Use a back pack
Pat, I thought you had the Cobra setup. Wanted to make certain that it was Cobra. Think that is the way I need to go. Where did you get yours?