Didn't test when powered up, I measured with everything off. I measured 0.022 Amps, not 2.5.
The way I measured was by, with the key on OFF, disconnecting the negative lead from the battery and measuring the Amps between the negative battery post and the negative lead. This is when I read the draw of 0.022 A. Then I unplugged stuff one by one to try to see what was causing the draw.
The gauge supposedly draws 0.0025 A at all tomes, even when the power is off (to keep the GOS happy), so that leaves ~ 0.0195 A of loss. But as I said above I wasn't able to determine what is drawing those ~0.0195 A.
So, wondering if that is actually more or less within spec, or if that is too much "leaking" from somewhere else and needs to be corrected.