If you can get me the wiring diagram from that Insteon panel I might be able to help you, a photo of the insteon zone controller if that is what is, with the door open and the wiring diagram in very good light and well focused would work.
That said, the older X-10 controls, can be difficult situation to work with.
Use the paper clip icon at the right end of the tool bar above, or the attach files link to the left of your send button.... the clarity of the wiring diagram will be of utmost importance.
Take it from close up so that I can enlarge it and still read the lines and text it, along with its legend.
Just so you know there are dozens if not hundreds of possible variations possible, all using currently obsolete equipment. This could take you and me hours to sort out... I will give it my best for up to 4 hours of my time (thats 3 bucks an hour) then after that I will ask for a modest additional charge for the extensive time it may take to sort this out for you.
Let me know if this will be OK with you or not, lacking that I can opt to other of our experts here, however that will be a real long shot... we do 'just answers' here, when it gets into working with obsolete systems we have this issue I've mentioned.