Originally Posted by NoTLaDStyle

It looks to have a standard power/speaker harness plug, a J bus interface, and a changer interface that could also be AI-net or the brain control module.

I doubt it will run without the brain. If it would, you would at least need the power/speaker harness to connect power. You might be able to get away with soldering power wires to the two larger pins and the acc is the top pin next to the power pins.