Ross,
I have just installed a Micro 12 in my Paritech DG 303, no room for a Gizmo despite its size. I used a couple of JR matchboxes to expand servo outputs to air brakes, rudder servos , pull, pull, and as a power source for the gps and vario modules.
During set up I inserted a Hangar 9 volts/ammeter in each servo line, to check amperage, works v well. For total current draw just insert the meter into a battery cable .

Giga Control made precise set up just so easy, and even the tiniest adjustment can be seen to affect the current draw on the meter, more accurately than on the Giga readout, particularly good for setting the closed position of the air brakes.

The entire DG is fitted with JR. HV servos but running at 5.9 volts from the Powerbox sensor switch.

David.