I guess the joke is on us. The mounts can be found on ebay, that's where I purchased mine. Parts guys at dealerships look at me like I'm stupid...which can sometimes be appropriate, but in this case it's because they've never seen one before! That's a clear indicator that HD figured out fairly quickly that this accy was a loser.
I have both the compass and tach mounted. I get positive comments from folks on how they look...of course, teh compass is not calibrated so it spins slowly all the time...it's just as well, I guess...for the most part I don't really care which way I'm going as long as I'm riding and not at work!!!!