Sorry about that, the AC are wired in parallel and the DC is wired in series (positive wire from one driver connected to negative wire from the other drive, and the 2 remaining power/negative wires going to the multimeter). I actually just reread the Amazon add and it said “output DC voltage can only be measured under load,” so maybe I just need to hook it up to the IMA and see what it does?I'm assuming you only have the AC inputs connected in parallel..
The DC outputs have to be in series.
Post a picture of your connections and units working and the voltmeter readings.