Sharky NRK

I am in the middle of a K24 swap into a CRX and have some questions

I am using the RSX dash and cluster. I bought an RSX dash harness is it possible to run tandem harness, the CRX and the RSX, to simplify the wiring splicing. My though is use the RSX dash and cluster connected like stock to the RSX ecu and engine harness, and then use the CRX harness to run the fuel pump and lights and ect. This would require integrating the RSX harness into the CRX ignition module

the two ignitions are different and that is where I am getting stumped

CRX-6 wires at ignition

white/red-accessories
white/black-battery (b? not sure what is up with b and a here)
blue/white-ignition 2
white-constant 12v
black/yellow-ignition 1
yellow-ignition 2 (a?)
black/white-starter

RSX-brown plug 5 wires

white/red-accessories 2
black/yellow-ignition
white-12v constant
black/white-starter
black/red-accessories 1

how do I integrate these two to get power to both running off the same ignition

I figure that is enough quesions for now, if someone answers me then I will ask the rest