VCRX, Vivint, Security Full/Flash

Has anyone had any luck setting up Contact Closure Inputs to the VCRX for Vivint? Vivint's documentation is for end-users, not installers; their Tech Support department doesn't seem to know if they have a Contact Closure Output anywhere.Vivint took over an older Guardian security system (not sure about the make/model). There's a spaghetti mess of wires in a panel in the basement that go to some wired sensors and the Vivint SmartHub so I'm hopeful there's a way to set it up.