My first post was kind of off. so I'm trying again and hoping for some better answers.

I have e 86 z28 Camaro TPI!
The engine has been replaced with a zz383 from GM Performance , and tranny Tremec tko-600, but thats not really the case.

I have removed all the stock wiring on the engine side. and replaced it with the harness to the stealthram system that I have installed.
but under the dash on the passanger side there are 3 connectors that plug in to the engine harness, (wich i have removed) and i cant find in any of the wiring diagrams on the site what they exacly are. (pinouts needed)
I'm thinking of replacing the original gauge cluster with a dakota digital unit..( with the sensors and all) so my question is pretty straight forward. HOW much of the original wiring can i remove without getting problems to start and so on ?

All sensors are plugged inn to the Commander 950/ Stealthram harness, and the new ones will be connected to the dakotadigital gauge cluster.
and I need ingition power to distributor , and the starter relay, commander system , and powerwindows/locks, rear hatch lock and whatever i cant remember!

So if any of you have a detailed wiring diagram or some info that could help me i would be VERY thankful.

Rikard