Picture on last page not to sure possibly the stock boost solenoid which you won't be using.
2nd pic ignition module normally sits on a bracket bolted to the side of the cylinder head with thermal paste between it.
Can be mounted anywhere really the cooler the better.
3rd pic top arrow is to the boost solenoid stock or aftermarket 3 port which I assume is what you are running.
Then from 3 port to actuator.
The 3rd port on an after marker boost solenoid can be left vent to atmosphere or plumbed back into the intake pipe like it does as stock.
Ideally for better boost control apparently you are best off having as short as possible pipe run between the above or even better instead of using the top arrow pressure source tap directly into the turbos compressure cover if possible.
Bottom arrow is fuel pressure regulator and Ideally only run a single line to this don't T of this line as any leaks and you will run lean.
This thread is how I have plumbed mine in with the charcoal canister removed hope it helps.