You hook up the power interface to the ACjr then plug in the X10 modules on the wall or powerstrip, make sure its a cheap $5 power strip because the expensive ones have noise supression and will block out the signal that the x10 needs to operate, chose a different channel for each x10 module, they should each have their own channel, and lets say on the ACjr you chose you MH lights for channel A1 , make sure that the module that you plug in your MH lights is set to A1 , and so on, im controlling 10 different things with my ACjr with X10's and have no problem the only problem i believe you will have is either using expensive power strips or plugging something in into a cirtuit that the signal wont get to. the way i have them is i have a few cheap power strips plugged into each other and the control module in the same power strip to make sure the signal is clear and wont have to travel too far.
