I have the rear speakers connected to the proper connector (the supposed tricky part), and the fronts to the standard connector, but for some reason I have no front sound...
If all else fails, I suppose I'll just run RCA's to the back straight off the clarion HU instead of jumping off the BA amp for my aftermarket amp. Wasn't quite ready to do all this though.
I did get the wiring worked out, thanks GJG!
For anyone installing the metra kit, here's a pic of what to cut courtesy of GJG, ignore the metra manual. Only cut the red part, leave the yellow alone.