Blowing Maxi Fuse immediately...?

You're no idiot at all. The idiots at Painless are the idiots. You need a factory wiring diagram so that you can basically install the Painless harness in the same manner, IMO. I've done a few of them on Mopars and that's what made it easier for me. ALL the Painless stuff is GM colored, so that can get kornfrooshing.