David, I ordered the same alarm in your video. Got it in the mail today, took out the instruction book and paused your video so I could copy (highlight) the wires you used. I'm copy catting your setup for my enclosed. Quick question: Did you wire both of your sirens into the brown wire? The factory siren has a red and black lead. In the manual it states connect the brown to the red on the siren. Did you connect both sirens to this brown wire or does your exterior siren connect to a different one?
8 years in the business.
Oklahoma Licensed Pesticide Applicator (3a)
2012 Hustler X-One 60", 26hp, Flex Forks, Mulch Kit