Installing 90 LS400 engine and tranny , ECU and engine harness.

[lexuscrazy]

Can anyone please help me, I'm trying to install LS400 engine and tranny in 87 300 zx which does not have any wiring.

I got ecu, engine wiring harness , Engine and transmission from the same car.

How do I wire this ? Does the ecu just need the power and rest it can control like running the engine and transmission ?

Can someone please walk me through the process of what I need to do wire this so this setup work.

Any links or suggested ready will be appreciated.

Thanks