i was fortunate enough to have the sub connection already hooked up and just chillen in the cut of the rears cargo area-
i will say though, the BA stock speakers are crap compared to my friends kicker complete system in his 5.7 limited. it spanks mine like a bad boy on the real.
im going to look into getting the rest of the system installed soon.
one thing i will say that i dont like about the sub - is you cant adjust the sub levels by it self with out effecting the majority of the bass. a lil iteration on that, a sub should be on the equalizer by itself and not group together with the rest of the speakers. a lot of times the bass is too much for a certain song but not just reg base but THUMP bass.
end rant- i still love the kicker sub, just need to get the rest to sound(ack'rite*)