Yup I totally get the additional complications of the various traction controls The only variant I see for what I have in mind is locking diff or not.
My truck is a 2006 with out any locker or traction control so my case is pretty straight forward. Im using a 2007 FJ schematics for the research. What I'm having trouble with is connecting the dots from the schematic (snapshot attached) to the part number of the computer; again the only variant they asked about was diff lock or no, so im not 110% that what I've asked for in the ECU is what I'm after. Any thoughts about that drawing would be appreciated. The ECU that I'm after appears to be 8953335230
Again for you hard core offroaders I can see that anything that works, works as it would for me. but if you get a client that is hesitent to let you chop up their truck this more OEM solution may land you the job.
You know what I'll be damned if I can figure out how to attach the page of the schematic I need (2007 FJ page 196) F@#$#^!!!!