As I said- its really simple, just a straight soldered pair of wire (ground, power) to the Vin and Gnd on my board (I have the duino mounted on some female mobo headers so i can pull it off if i want)
The rest of the wiring is just basic LOW or HIGH digital pins, and a 3.3 v line to drive the common anode 7 segment.
It's so brutally simple I cant imagine how it went wrong- i mean it worked perfectly on the bike.
Bike 12v -> Duino Vin
Bike Gnd -> Duino Gnd
Duino 3.3v - > Common Anode 7-Seg
Duino Digital Pins 2-8 -> 7-Seg
Nothing more 
- worked great before from my PC too. just guessing the 12v from the bike fried it somehow... Does this happen?