Well I had a great phone call with Jay at Infinitybox this morning. Straightened many things out which helped me better understand his system and the Subaru diagrams. I also did some searches on internet for acronyms not defined in the Subaru manual, nor Infinitybox's. Then I played with the steering column's wires and found most of what I was looking for (yeah, that quickly, who knew! Not me!!). Crossing fingers the wire colors I found in the manual really match the ones on the column, I should know tomorrow.
It seems many wires are not going to be used anyway (I won't even use the cylindrical starter piece and wires), delete all relays, all security module crap things and that stuff. My stand alone ECU and the Infinitybox will be replacing and controlling almost everything without a relay and stuff. I still need a few relays for specific things, but they will be custom.
I'm still learning. BTW for those interested, on the clutch, the blue connector/switch at the bottom is used probably to cut off the cruise and the switch works the exact opposite as the interlock switch, which is located just above, in white. One switch grounds when you press and the other cuts ground when you press. I have removed the latter, no cruise on mine.
Frank (Pearldrum) gave me some inputs last night which also triggered some more understandings when I started to read again the wiring manual today. Tnx for that, man! It's not over yet but tnx for the great start!
Jay is looking at a special feature for both my seats heating and back seat reclining motor. The beauty of that system is I can program pretty much anything like I want and I can eliminate all switches by using my tablet. Say for ACC, IGN, START, shutdown, turn on ECU only, awic water pump, seats, hazards, parking lights, etc. I will have one switch on my dash: kill switch.
I hope to progress even more this w-e. But the key is to read a lot of documents, there are many documents giving me different info but when I match them all up, it then adds up! Plus the help I get here and more things match up. Now that's a good feeling.