2004 Cadillac CTS wiring

If you done this car before:

1.   where exactly do you run your wires through firewall, like your tech wire and hood trigger. 

2.  What does ECM module looks like, I need to hook up the tech wire, I know its on pass. side of the engine, but I cant find it there.

3.  Do you have to run the power wires straight to the battery or can you just hook them up to RED / white wires?

Thanks for help...

1 dont remeber

2 You have to remove the engine cover should just pop off. If is a cts-v the ecm is below drivers side headlight.

3 I used the wires at the ignition harness just but I was just putting on a rs keyless no alarm. Make sure you do neg parking lights also.

Also if your using the dei 457g module the pink and pink/black wires will go to a yellow instaed of white. These are fairly easy cars.