Ok - update.
C.C. is telling me that there is no arm/disarm wire on the H3s. Thus, the only way to operate the alarm is with the factory remote.
And as some of you suggested, DEI was worthless in there technical assistance on the matter.
For those of you that have the systems installed, do you know how your installers worked out the arm.disarm issue.
The system I had installed was the 1400 XP.
