Finally got it all wired up, had to swap out the first one as it was DOA, everything lights up. When i turn the car on it reads what ever comes up, temp or fuel, then shortly goes to - - on all modes. The compass always reads NE, i double checked my wires, everything seems ok, could i just have another bad unit. The inly other thing i could think of that could be sus is the way im getting class 2, i have a paper clip jumpering green and purple and have green wired to the class 2 feed to the unit( green was the stock radio input)