I recently purchase 92 miata. The radio display was not working so i purchased a new one. I've been searching for wiring schematics for the old radio and haven't had any luck. It was the original stock radio. If anyone could help me i would really appreciate it.

Thanks, Shane

 

Continuous voltage at all times from 10A ROOM fuse.....Blue w/ Red stripe
Switched voltage ( key on or acc only ) from 15A CIGAR fuse...Blue w/ Black stripe
Voltage with lights on only from combination switch Red w/ Black stripe
Output to power antenna...Lightgreen w/ Yellow stripe
Right front door speaker...Blue and Blue w/ Yellow stripe
Left front door speaker....Red w/ White stripe and Red w/ Green stripe

If equipped with headrest speakers. These speakers are wired in parallel ie there is a left and right speaker in each headrest The left speaker in each seat headrest gets the same feed from the radio as does the right.
Right side headrest speaker to both seats.....Blue w/ white stripe and Blue w/ Orange stripe
Left side headrest speaker to both seats.....Red w/ Yellow stripe and Red w/ Green stripe

The OE wiring diagram does not distinguish which wire to the speaker is + and which is -