the tach is a new 2012 addition. i love it. while riding, just to the left of your rpms it shows what gear your in. the new models have a trip switch on the left handlebar that lets you scroll through rpm/gears, total mileage, 2 trip mileage counters,miles till you need to refill gas, and a clock. im really loving it! and yes, once you start moving, the shakes smooth out and the bike rides GREAT!!!!

 

As everyone else has said, the vibrations are normal. It chills out once the rpms drop.

 

Yep the '12 speedo has a tach and a gear indicator (and the display change/reset button on the bars). Nevertheless, I changed my speedo to this speedo/tach:

 

Gamble Gold, I like your speedo/tach. Don't want to hijack the thread but I wonder if that would work on my 2007 StreetBob?

 

I don't think so, I'm afraid. I think it only works with the CAN Bus bikes (which the Dynas only got with the 2012s).

 

As mentioned, the shake is normal.... I shimmed my motor mount and it still shakes, but once I take off, it levels right out.

 

All real Harleys vibrate like that, especially the black ones.