Dazed and confused

Hey guys and girls been following you for long time and your knowledge has been very helpful, thanks but haviNG been stymied by this last breakdown1996.5 miata nb or na? California model, car just stopped checked everything I have voltage but no ref signal ,no codes every thing works electrical wise fuel pump only runs in diagnostic mode ,all relays checked and or replaced while checking fuse st sign ,diagram shows violet wire to the ecm but no wire there just empty slot any body know where they re routed it to ,it's there( violet wire) at fuse. it's a 1996.5 with wiring stock but has 97 wire colors on some components wired it has nb logo on hood sticker it had the dreaded clifford alarm I talk to previous owner who said he didn't even know he had an alarm ,I yanked it after it quit because it had a starter kill on it would crank, it cranks now just no spark any help deeply appreciated