What exactly is your problem? You are asking about missing sensors, could you specify which ones? As far as splicing goes, you will have to if you do not have the turbo body harness. Is this what you mean when you say that you have the harness? THere is an engine and a body harness to deal with.
Do you know the year of the engine? I might be able to find my old pin breakdown of the kickpanel if you have a 93jdm turb and a 91 N/A, not sure if it helps for 91,92.