Originally Posted by Point.Blank
If you don't cut it off you'll always know where it is.....in the car on the end of the wire :) You'll probably need to extend the wires from the sub to wherever you locate your LOC so I would just splice off the sub wire a couple inches short of the plug and leave the plug on the end.
Setting subs out of phase (reversing +/-) isn't uncommon.....you'll notice that many home theater subs have phase switches. It depends on various things in your environment on (distance from front stage, direction of firing, type of enclosure, configuration of subs in an enclosure etc., size of vehicle). The one that is correct (in phase, out-of-phase) is the one that sounds best.....bass hits when it's suppose to at the correct peak. In the Avant where I have my sub out-of-phase is what works ...Stubek found the same thing in his Avant.