[WizenedEE]

I'd suggest pulling everything off (except the in power, obviously), including circuit breakers and wires going off to other things and check again. Make sure you're using your meter from all the way on one side of the connector to all the way on the other side (there are two 24V and two GNDs on each connector)

Also, there's a connector that fits on top of the 24V output that you screw the wires into; try taking that off.