Wiring questions for SR20DET into an '89

[TheTimanator]

got a few questions about the wiring harensses.....

1.) I tried to take out the wiring harness in my car tonight and realized that some of the wires coming off the ecu go under the dash. Am I gonna have to take out my dash to get to it? will I have to take out the entire harness out of the dash??

2.) I was test fitting my harness today (with the SR out) and noticed that nothing plugged into my starter, altenator, and a/c (which I plan on keeping) am I missing some more parts???

3.) I was looking at a pic of an SR that have been taken out to see if I could figure out where the starter, and altenator went and i noticed it had a wire coming off the tranny...that was going somewhere (now idea) and I don't have that. Just a plug. Will the KA tranny wiring work?


Any help would be much appreciated!!! here's me wishing I had bought a clip.