Put in a new battery this morning, 200tdi 110. Preheats, starts and runs fine but now the dash volt gauge is needle is all the way to the left and wont move at all.

My meter shows its charging at about 14.5v ish.

any ideas?

Check to see if battery voltage is at the back of the meter, if it is the meter is U/S. If not then you've probably disturbed something.