MSefi.com read only forum (Jan.15,2018)

Alright, so my first ECU had either a default or it was wired wrong. So after getting it fixed like new, from the great people at DIY, I wanted to rewire and make sure it is 100% right. So if someone could please confirm the ones I know/think I know, and help me with the ones Im not too sure about, I woud highly appreciate it, and have your internet babies for you.

So, Im using MS2, V3.57 (pe-built by diy)
LC-1 Controller, and W/B sensor from diy
pre-made wire harness from diy

Its being installed on a 1989 IROC Camaro, 350 SBC 5.7L, TPI. Brand new ignition stuff, plugs, wires, 8 pin hei mod, cap etc. All ignition stuff is brand new, upgraded from stock, but still stock setup.

Here is what I THINK is how they go....

WIRE COLOR--------------TEXT ON WIRE----------------------CONNECTION ASSUMPTION
Green----------------------------F-Idle--------------------------------- Not connected/used
Brown------------------------------Pin-36---------------------------------Advance control signal
Thick Green------------------------INJ-1-----------------------------------Injector bank 1
Thick Blue--------------------------INJ-2-----------------------------------Injetor bank 2
Blue------------------------------TPS Signal-------------------------------TPS Signal Wire
Grey-----------------------------TPS 5 VREF-------------------------------TPS 5v Ref wire
Yellow-----------------------------Coolant--------------------------------Coolant temp sig wire
Orange-------------------------------IAT-----------------------------------Manifold air temp
Thick Grey---------------------------IGN---------------------------------Tach signal wire
RED-----------------------------------12V-------------------------------12V source that stays on during cranking
Pink-----------------------------------O2--------------------------------O2 sensor output from LC-1 ontroller
Thick Black----------------no text/assume ground-----------------------bolted to body/chassis
Thick Black----------------no text/assume ground-----------------------bolted to body/chassis
Green/White-----------------------IAC 2-A----------------------------------Not sure where goes
Green/White-----------------------IAC 2-B----------------------------------Not sure where goes
Blue/White-------------------------IAC 1-A----------------------------------Not sure where goes
Blue/White-------------------------IAC 1-B----------------------------------Not sure where goes


Most of them, Im pretty sure I know where they go, the few I question is the ground, I have one of the ground wires, soldered to the cars body, with the LC-1 ground soldered with it. The other ground is connected because I wasnt sure if it matters where it goes. Can it also be connected somewhere on the body as well, or what is the best way to do it.

Second thing is the IAC wires. Wiring diaghrams and labels all use IAC 1-a, 2-b etc. On my car from looking at the wire schem, mines labeled IAC Coil A, HI, coil A low, then coil b hi, and coil b low. Now, Im not sure, but if I were to have to hook it up, id wire it MS IAC 1-A to cars IAC 1 Hi, then B to low....

Id appreciate any help if possible, I have read through megamanual, and other sites so please dont say go read something, I have alot before asking and still not getting it and dont want to break anything.

Thank you in advance

.

In addition, I wouldn't use the grounding scheme you have - grounding both of the black wires to a single lug bolted to the engine block will significantly cut down on the amount of noise in your system.