Just installed an Alpine unit in the 90 and while the front speakers sound great... I'm getting no joy from the one in the rear doors. I put the stock 6" units back in and the fuses are good in both and the wiring matches up but there is no sound. PO had an aftermarket setup including amp/subwoofer(not included with car) and 6 1/4" Pioneers in the doors. All were wired separately but it looks like he was just bypassing the original wiring.
Pretty sure the car has a subamp for the rear door speakers, but where do I find it and can I get it to work with my new unit? Anyone have a wiring diagram for a '93 90cs???
Thanks,
Dave
