I purchased a 1993 300zx factory stereo cassette with center speaker to put in my 1991 300zx. Everything is fine and it fits, but the problem is that sound comes out of only 2 speakers and the other 2 have static whenever the on/off/volume button is adjusted. THere is no FADE or BALANCE adjustment knobs on the radio. Can someone tell me what's wrong and if I need something else to make them work. What do I need to make the center speaker work? THere is no other cable to plug into it.
Thanks
Thanks