maybe for a honda. The problem is the honda is straight foward. Still do not recommend putting in your own alarm. But what are you going to do on five wire keyless entry system, or voltage sensitive systems. Or f**k a sleeper ford model.
The more cars change the harder it gets to work on them. And the more dangerous for diy.
Especially from an unauthorized site.
I am a member of the 12v site as well. I still wouldnt advise anybody to take on an alarm.
Even though you did have the right tools handy, good on you there.
I mean even the basic deck installs I see it all the time. People who swear they know what they are doing.
Pull the deck chop the harness then attempt to wire it.
9/10 home installs are flawed in one way or another.
Why do you think installers have to be certified?