I bought a JVC car stereo (KD-HDR20) today for my '96 pathfinder. I have connected all the wires. I have double checked my work against the wiring diagram. The unit will not turn on. I have tried resetting it several times. I can get the display on and I can get the unit to "eject" even though there is not a disc in it. Anyone know why this unit will not work in my pathfinder? There aren't any left over wires, so I don't get why the unit will not turn on (yes, I have the car running when I try to turn it on)