Vehicle:Mazda Miata 1994

Manual:Hardware:Mazda_PnP

Plug 1

22 pin

pos	b pos	color	desc	type
1A		BLU/RED	Hot at all times. Room Fuse.	Input +12v
1B		WHT/RED	Main relay	Input +12v
1C		VIO
1D		WHT/GRN	Data Link Connector
1E		YEL/BLK	Check Engine Light
1F	*	*	*
1G		BRN/YEL	Coil Pack Cylinder 1&4	Output
1H		BRN	Coil Pack Cylinder 2&3	Output
1I		BLU/WHT	Powertrain Control Module (Transmission)
1J		BLU/BLK	AC Relay
1K		BLK	J/C? (M/T Only)
1L		BLK/GRN	Coolant Fan Relay
1M		GRN/RED
1N		RED	Powertrain Control Module (Transmission)
1O		GRN/BLK	stop light switch	Input
1P		BLU/YEL
1Q		LT GRN/BLK	AC Pressure Switch
1R		YEL/BLK
1S		BLU/ORG	Heater Control Unit
1T		YEL/RED
1U		RED/BLK
1V		BRN/WHT	Powertrain Control Module (Transmission) & Clutch Switch

Plug 2

26 pin

pos	b pos	color	desc	type
2A		BLK	Ground	Ground
2B		BLK	Ground	Ground
2C		BLK/LT GRN	Ground	Ground
2D		BLK/BLU
2E		WHT	Crank angle #1 CKP	Input, four times
2F		BLK/RED	(Maybe BLK/LT GRN later in loom)
2G		YEL/BLU	Crank angle #2
2H		LT GRN/YEL	Data Link Connector
2I		BLK/WHT	Instrument Cluster (Tacho)+Coil Packs+Data Link Connector
2J		LT GRN/RED
2K		LT GRN/WHT	+5 ref/TPS power	Output 5v
2L		BLU/RED
2M		RED/BLK	+Powertrain Control Module (Transmission)
2N		RED/BLU
2O		RED	MAF signal	analog input
2P		RED/BLK	intake air thermosensor	analog input
2Q		BLU/WHT
2R		YEL/GRN
2S		BLU/WHT	Condenser Fan Relay
2T		LT GRN	Fuel Pump+Data Link Connector
2U		YEL	Injector #1	Output/low side
2V		YEL/BLK	Injector #2	Output/low side
2W		BLU/ORG
2X		YEL/RED
2Y		GRN/WHT	Injector #3	Output/low side
2Z	64 0	GRN	Injector #4	Output/low side

Diagram

http://www.miataforumz.com/1990-200-Miata-Wiring/94sys.pdf