Hello guys...finally I decided to go in pretty new subject to me and get knowledge in car alarm system. And for first it was pretty easy, but after spent some hours and hours on researching and looking for answer I finally got some question that I'm not understand, yet. And I hope that you going to help me and I'm going to help another people that going my way. Let it be small how-to. Because I will not just install this, but will explain for newbie persons like me how i did that
Attention tons of pictures
This is guide that I followed for wire location

Let's start
I bought this alarm Code Alarm CA6552 for good reference and nice price compare to DEI models. Anyway the install and guide that was provided as I understood is not easy for person who install it first.
Here is the clickable link with specification
My car is Mitsubishi Eclipse 2000GS. Here is below the description that I guided for connecting my alarm.
And here is questions:
1. Output Harness Ignition 3/ Active Output
As in manual said it's additional wire that can be programmed for different purpose especially for transporder bypass. And as I wish to install car alarm remote I understand that I need it. But as I looked on my wire diagram (Start and Immobilizer ) I can't find to which wire I need to contact it.
Here is below the picture what's manual said about this:

So do I need to cut my starter cable and connect this like it on image 3 for remote start option
Here is the picture of what relay I have with this alarm

2. Output Harness AUX 1
It's provides impulse signal to control my power window, sunroof etc. But I really don't know how and what I need to do with this wire. Here below description of it

3. Input Harness Door trigger input+
According to my electric diagram we have negative switch it's mean both wires from key cylinder has ground, so should I just cut this wire or I misunderstood the purpose of it

4. Input Harness External Start Input (-)
Should I connect it to one of my ground wire on bypass kit DEI 556U. Right ?

5. Input Harness Neutral Safety Input(-)
It's necessary for remote start, and couldn't locate this wire. Is it in big junction box ?

6. Input Harness Tach Input
As professional guide side of wiring location the picture from the top thread which I followed it's some plug in my fuse box, can't locate it definitely so need help to find it.
Here is what alarm guide said :

7.Alternate Output Harness - Pulse during crank
Should I connect it just to starter wire, because as I understood I haven't second starter wire, and what actually this alarm wire doing.


8.Start Harness - Starter Output(+)
According to manual I should install starter killer, here where I should use this wire Ignition 3 from output harness. Right ? And is it really necessary to install this starter killer because I've immobilizer ?

So here we have pretty a lot of question that I wish to figure out for myself and I wish to help people who going to have probably the same question with DIY Car Alarm.

And one more time the list of questions:
1. Output Harness Ignition 3/ Active Output
2. Output Harness AUX 1
3. Input Harness Door trigger input+
4. Input Harness External Start Input (-)
5. Input Harness Neutral Safety Input(-)
6. Input Harness Tach Input
7.Alternate Output Harness - Pulse during crank
8.Start Harness - Starter Output(+)

THE MAIN THREAD GOING BE UPDATED WHILE I'LL GET ANSWERS ON MY QUESTION AND EVERYTHING WOULD BE CLEAR.
So will do Small How To DIY Car Alarm in future from this thread
Thanks everybody who going to help me in this !!!