I'd say Sportsmobile's wiring strikes again. I still think the wires your looking for are in that location buried in that loom right where your looking. There should be about 10 blunt wires showing in your photos including the ones SMB used to tap into.
I think you already have these but here is the PTO/SEIC info for a 2010
And here is one for a 2009, which seems to be the same as the 10' but this shows some color pictures of the wires.
It seems there was a change in wire colors between my 05' and your newer front end/interior 2010. If the adjustable RPM high idle is too involved it just takes a 12v source to raise idle to 1200 per a simple switch.