My 07 KJ's left side Infiniti amp looks like it shit itself which in my book calls for a full speaker swap, I've left everything stock so far. Currently I have the stock HU but I already ordered a JVC KD-X260BT for an aftermarket replacement. I've ordered the wiring harness as well but I'm a bit confused on how to wire everything into the car's harness without using the Infiniti amps. Could I just solder on both pos. and neg. connections leading straight from the new speakers (Kicker 44KSC6504) to the car's existing wiring harness? From there I would connect that to the aftermarket stereo like usual.