HKS VPC and GCC combo installation help

I just recently accuired a HKS VPC and GCC combo unit. The previous owner made a full plug and play harness. For the most part I understand whats going on but I was wondering if anyone had acess to the instalation manual and would like to help me out.

I also got a Blitz ecu. Looks like its time for a bigger turbo.

Very late to the party, but I had a VPC & GCC combo in my 1985 Nissan 200sx S12 Turbo. It's plug and play, oem ecu goes to one plug, the VPC goes into the other almost identical plug and GCC plugs into the harness as well. Pretty straight forward. Imo, get rid of the VPC & GCC and go with a standalone EMS.