Can someone point me in the direction of the correct configuration to power a relay using the open collector on the GoControl 2 (contact 4)?

My setup is as follows:

Altronix AL624 - power board
Altronix RBSNTTL - relay board
Interlogix MPI-11 - siren driver board

Using these for reference:
https://www.alarmgrid.com/faq/can-i-...2gig-gocontrol - talks about using Open Collector
http://www.alarmsystemstore.com/Articles.asp?ID=310 - diagram for using the RBSNTTL

I set the "Q78: Select Output (00‐12)" to "(11) Follows Internal Sounder Alarm" and wired contact 4 to the "NEG-" and contact 1 to "TRIG-" on the RBSNTTL. I can't seem to get the siren to activate. What am I missing?

Thanks in advance!