EC2 Engine Controller Terminal Assignments and Destinations	01 -24-00
		TERMINAL		DESTINATION
	I.	Ground connection		Ground stud on EC2
	2.	N/C		No connection
	3.	Trailing coil ignition control		Red wire on Mazda trailing coil assembly
	4.	Crank Angle Sensor (CAS) 2		Red wire on Mazda Crank Angle Sensor (CAS)
	5.	Mode Select switch 0		Pin 11 on the Programming & Control Module (PCM) connector
	6.	Mode Select switch I		Pin 3 on PCM connector
	7.	Serial Data out		Future connection to fuel flow instrument
	S.	JC		No connection
	9.	N/C		No connection
	10.	Mode Select switch 2		Pin 10 on PCM connector
	II.	Temperature sensor power (Vcc)		Temp sensor wire (either)
	12.	Disable leading coil	t	Top pole on Coil Test switch
	13.	Disable trailing coil	t	Bottom pole on Coil Test switch
	14.	Control panel power (Vcc3)		Pin 7 on PCM connector
	15.	AIB (Controller) Select switch		Pin 5 on PCM connector
	16.	Ground		Pin I on PCM connector
	17.	Rotor I primary injector	*	Rotor I primary injector (center port on rotor 1)
	IS.	Rotor I secondary injector	*	Rotor I secondary injector (outside port on rotor 1)
	19.	Injector return	*	Ground on airframe near battery terminal
				(See section on ?Fuel Injector Wiring?)
	20.	Trailinc coil select		White wire on Mazda trailing coil assembly
	21.	Leading coil ignition control		Red wire on Mazda leading coil module
	22.	Crank Angle Sensor (CAS) return	#	White wire and white with black stripe wire on CAS
	23.	Crank Angle Sensor (CAS) sensor I		Green wire on Mazda Crank Angle Sensor
	24.	Mode Select switch 3		Pin 4 on PCM connector
	25.	Program voltage		Pin 9 on PCM connector
	26.	Mixture Control voltage		Pin 15 on PCM connector
	27.	N/C		No connection
	25.	Future connection to fuel flow instrument (02 sensor) Install wire but do not connect at this time (insulate wire)
	29.	Tachometer output (12 pulses / rev. 12 volt pulse)		To fuel flow instrument or Engine Information System (ELS)
	30.	Cold Start switch		Pin 13 on PCM connector (And injector disable switches if used)
	3 1.	Inlet air temperature sensor		Air temperature sensor (either wire)
	3~	Program Store switch		Pin 2 on PCM connector
	33.	Controller power (+12 volts)		To controller power switch
	34.	Controller power (+12 volts)		To controller power switch
	35.	Rotor 2 secondary injector	*	Rotor 2 secondary injector (outside port on rotor 2)
	36.	Rotor 2 primary injector	*	Rotor 2 primary injector (inside port on rotor 2)
	37.	Injector return	*	Ground on airframe near battery terminal
				(See section on ?Fuel Injector Wiring?)

*	Indicates connection to be wired with 20-gauge wire. Make all other connections using 22-gauge wire. Twenty (20) gauge
wire needs to be used for these six specific connections; however, do not use 20 gauge wire for all connections or the back shell
will not fit on the harness connector.

t	The center (common) connection of the SPDT Coil Test switch is a ground connection. Connect it to a 22-gauge wire and
terminate it with a circle lug connected to the grounding stud on the EC2 case. The shield for the crank angle sensor
(CAS) wires should also be grounded here.

# Do not attempt to solder two wires directly to the connector. Splice the two return lines of the CAS together near the CAS
and connect them to the EC2 with a single wire. Note that the wires between the CAS and EC2 should be shielded.