I have a 1996 Grand Caravan with Infinity system. My old stereo system was acting up and I recently replaced my stereo with a JVC unit from Crutchfield. The stereo works but the left and right door speakers and the rear side speakers do not work. No sound is coming out at all. The dash and rear pillar speakers (by the hatch doors0 are the only ones working. I measured the voltage coming out of the radio (BLUE solid wire) and I get something like 13+ volts. I installed back the old stereo system and it does the same thing. No sound coming out of the left and right door and rear speakers. I do not know what is going on. I followed the wiring instructions when I soldered the wires.