I just installed my 990/755 combo and I’m having some difficulty getting (or understanding maybe?) how the 12 volt trigger works with the 755. I followed the instructions to hook the system up but the 755 never appears to turn off when I shut down the 990. Plugged all the connections for the 990 in and cabled it to the 755 first. Plugged the power in to both units, pushed the power button on the 755 to on, plugged the 12 volt trigger into both and powered up the 990. This seemed to be exactly the sequence suggested in the manuals.

Is the green power light on the 755 supposed to stay on all the time? In my system, it never goes off and when I power the 990 back up, you can here it start through the speakers. So I don’t think the 755 is ever shutting off.