You have a couple options depending on what you want it to do, I initially just ran mine in "dumb" mode. That was simply providing it with a GND and switched 12v, this worked fine for me, and may for you as well. To put it in automotive mode, you just have to provide it with GND, switched 12v and constant 12v. From my understanding the biggest advantage with automotive mode, is the delays you can program into it to prevent turn on/off thumps on amplifiers. The aux input is what you can use to send the remote turn on signal to an amplifier (I don't use this, I have an MS8 that gets power first, and then powers on amplifiers).I'm a little lost now regarding the DCDC-USB config. I was having a look at the manuals, but as I didn't get the package yet so I couldn't fiddle with it to figure it out. Should I be looking to set it in Automotive or plain UPS mode? If I understood it correctly Automotive mode requires the aux input to be connected to keep the PSU powered and will work as a UPS, right?
Hope that helps.