Well I've been working on this the past several weekends, and thought i'd share some pics of the all the wiring for the MS, and the IAT and coolant sensor locations.

GM Coolant sensor mounted in stock T-stat housing, and wired to loom:



GM Intake Air Temp sensor, tapped into the EGR hole, and counter sunk so the tip of the sensor is more exposed inside the mani:


Here is some wiring at the battery for the MS power, and redid my fan relay wiring while i was in there:



This is the stock injector harness that I spliced. I used Male/Female connectors just in case I wish to re-connect the stock wiring:



I left 2 loops of wiring here, one is the injector driver wires, just if i need easy access to the wiring to add resistors, or whatever. The other harness there is the Ignition driver wires, and I ran 3 spare wires here also, just in case I wish to add more features later on.



Just a pic of all my wires. Getting the harness all ready..



Oooo look at all the wires! This is fun :)


This is where I drilled a 1" hole in the firewall, passenger side, close to the stock wire harness.



Pic of the loomed up complete harness running next to the stock harness, and into the car.



The complete wire harness on the pass side. I don't know exactly where I will be putting the MS, but it will prob go under the dash there, prob to the left by the console. I'll prob run a DB9 cable to it, so I dont have to mess around plugging it in all the time.