I have a 2014 Ram 1500, the truck has the base stereo system, not the Infinity system. I have installed an LC8i, 4 interiors, 2 subs, and 3 amps and kept the factory head unit. I have power to the head unit, but NO sound out of the speakers. If I connect a speaker straight to the head unit it does not work, but if I connect it back to the factory wiring it works. I have tried everything, I can't figure out what the problem is. Anybody have any ideas?