Then there you have it. You wired the +5 but I bet a dozen doughnuts you didn't wire the ground. This is "your problem".
Julio
Razor,
I followed the instructions exactly per the vortex buick website about getting the map signal power from behind the dash, but they didn't mention anything about wiring a ground. Where do I wire the ground?
P.s. the voltage on the map signal wire, with key in the ON position is 2.63v (you stated the turn voltage is 2.2v), with no cluster installed. My cluster should be back this week.