MX-5 Miata NA6 1990-93 (B6-ZE, 1.6) → Emtron Shadow 8 (auto)
MX-5 Miata NA6 1990-93 (B6-ZE, 1.6) — Emtron — Shadow 8
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-04
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Constant +12V | — | W4 | — | 0.85 | SHADOW8-B-1 | — | — | — |
| B | ECU power +14V (main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| C | Start signal | — | W29 | — | 0.5 | SHADOW8-A-26 | — | — | — |
| E | Malfunction indicator lamp (MIL) | — | W23 | — | 0.5 | SHADOW8-B-10 | — | — | — |
| G | Ignition 1 (coils 1+4, wasted spark) | — | W17 | — | 0.5 | SHADOW8-B-27 | — | — | — |
| H | Ignition 2 (coils 2+3, wasted spark) | — | W18 | — | 0.5 | SHADOW8-B-28 | — | — | — |
| N | Wide-open throttle switch | — | W30 | — | 0.5 | SHADOW8-A-27 | — | — | — |
| P | Power steering pressure switch | — | W31 | — | 0.5 | SHADOW8-A-28 | — | — | — |
| Q | A/C request | — | W32 | — | 0.5 | SHADOW8-A-29 | — | — | — |
| V | Neutral/clutch switch | — | W33 | — | 0.5 | SHADOW8-A-30 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| C | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| D | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| E | Crank position (CAS NE) | — | W15 | — | 0.5 | SHADOW8-A-5 | — | — | — |
| F | AFM ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| G | Cam position (CAS G) | — | W16 | — | 0.5 | SHADOW8-A-6 | — | — | — |
| I | Tachometer output | — | W24 | — | 0.5 | SHADOW8-B-11 | — | — | — |
| K | +5V sensor supply | — | W14 | — | 0.5 | SHADOW8-A-3 | — | — | — |
| L | Idle switch (TPS) | — | W34 | — | 0.5 | SHADOW8-A-31 | — | — | — |
| N | O2 sensor | — | W26 | — | 0.5 | SHADOW8-A-11 | — | — | — |
| O | Air flow meter (AFM) | — | W25 | — | 0.5 | SHADOW8-A-10 | — | — | — |
| P | Intake air temperature (IAT) | — | W28 | — | 0.5 | SHADOW8-A-13 | — | — | — |
| Q | Coolant temperature (ECT) | — | W27 | — | 0.5 | SHADOW8-A-12 | — | — | — |
| U | Injector 1 | — | W19 | — | 0.5 | SHADOW8-B-2 | — | — | — |
| V | Injector 2 | — | W20 | — | 0.5 | SHADOW8-B-3 | — | — | — |
| Y | Injector 3 | — | W21 | — | 0.5 | SHADOW8-B-4 | — | — | — |
| Z | Injector 4 | — | W22 | — | 0.5 | SHADOW8-B-5 | — | — | — |
SHADOW8-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU supply | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | 8.0V sensor supply | — | — | — | — | — | — | — | — |
| 3 | 5.0V sensor supply | — | W14 | — | 0.5 | OEM-2-K | — | — | — |
| 4 | 0V analog reference | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Crank position sensor | — | W15 | — | 0.5 | OEM-2-E | — | — | — |
| 6 | Sync position sensor | — | W16 | — | 0.5 | OEM-2-G | — | — | — |
| 7 | Trigger ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Shield | — | — | — | — | — | — | — | — |
| 9 | Ground 1 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Analog voltage 1 | — | W25 | — | 0.5 | OEM-2-O | — | — | — |
| 11 | Analog voltage 2 | — | W26 | — | 0.5 | OEM-2-N | — | — | — |
| 12 | Analog voltage 3 | — | W27 | — | 0.5 | OEM-2-Q | — | — | — |
| 13 | Analog voltage 4 | — | W28 | — | 0.5 | OEM-2-P | — | — | — |
| 14 | Analog voltage 5 | — | — | — | — | — | — | — | — |
| 15 | CAN bus 1 high | — | — | — | — | — | — | — | — |
| 16 | Knock 1 + | — | — | — | — | — | — | — | — |
| 17 | Knock 1 − | — | — | — | — | — | — | — | — |
| 18 | Analog voltage 6 | — | — | — | — | — | — | — | — |
| 19 | Analog voltage 7 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 20 | Analog voltage 8 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 21 | Analog voltage 9 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 22 | Analog voltage 10 (switchable 1k pull-up) | — | — | — | — | — | — | — | — |
| 23 | CAN bus 1 low | — | — | — | — | — | — | — | — |
| 24 | Knock 2 + | — | — | — | — | — | — | — | — |
| 25 | Knock 2 − | — | — | — | — | — | — | — | — |
| 26 | Digital input 1 | — | W29 | — | 0.5 | OEM-1-C | — | — | — |
| 27 | Digital input 2 | — | W30 | — | 0.5 | OEM-1-N | — | — | — |
| 28 | Digital input 3 | — | W31 | — | 0.5 | OEM-1-P | — | — | — |
| 29 | Digital input 4 | — | W32 | — | 0.5 | OEM-1-Q | — | — | — |
| 30 | Digital input 5 | — | W33 | — | 0.5 | OEM-1-V | — | — | — |
| 31 | Digital input 6 | — | W34 | — | 0.5 | OEM-2-L | — | — | — |
| 32 | CAN bus 2 high | — | — | — | — | — | — | — | — |
| 33 | CAN bus 2 low | — | — | — | — | — | — | — | — |
| 34 | Ground 2 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
SHADOW8-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery constant (HOT) supply | — | W4 | — | 0.85 | OEM-1-A | — | — | — |
| 2 | Injector cylinder 1 | — | W19 | — | 0.5 | OEM-2-U | — | — | — |
| 3 | Injector cylinder 2 | — | W20 | — | 0.5 | OEM-2-V | — | — | — |
| 4 | Injector cylinder 3 | — | W21 | — | 0.5 | OEM-2-Y | — | — | — |
| 5 | Injector cylinder 4 | — | W22 | — | 0.5 | OEM-2-Z | — | — | — |
| 6 | Injector cylinder 5 | — | — | — | — | — | — | — | — |
| 7 | Injector cylinder 6 | — | — | — | — | — | — | — | — |
| 8 | Injector cylinder 7 | — | — | — | — | — | — | — | — |
| 9 | Injector cylinder 8 | — | — | — | — | — | — | — | — |
| 10 | Aux output 1 | — | W23 | — | 0.5 | OEM-1-E | — | — | — |
| 11 | Aux output 2 | — | W24 | — | 0.5 | OEM-2-I | — | — | — |
| 12 | Aux output 3 | — | — | — | — | — | — | — | — |
| 13 | Aux output 4 | — | — | — | — | — | — | — | — |
| 14 | Aux output 5 | — | — | — | — | — | — | — | — |
| 15 | Aux output 6 | — | — | — | — | — | — | — | — |
| 16 | Aux output 7 | — | — | — | — | — | — | — | — |
| 17 | Aux output 8 | — | — | — | — | — | — | — | — |
| 18 | Digital input 7 | — | — | — | — | — | — | — | — |
| 19 | Digital input 8 | — | — | — | — | — | — | — | — |
| 20 | Digital input 9 | — | — | — | — | — | — | — | — |
| 21 | Digital input 10 / ignition switch | — | — | — | — | — | — | — | — |
| 22 | Aux output 9 | — | — | — | — | — | — | — | — |
| 23 | Aux output 10 | — | — | — | — | — | — | — | — |
| 24 | Aux output 11 | — | — | — | — | — | — | — | — |
| 25 | Aux output 12 | — | — | — | — | — | — | — | — |
| 26 | Aux 9–12 power supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | Ignition TTL cylinder 1 | — | W17 | — | 0.5 | OEM-1-G | — | — | — |
| 28 | Ignition TTL cylinder 2 | — | W18 | — | 0.5 | OEM-1-H | — | — | — |
| 29 | Ignition TTL cylinder 3 | — | — | — | — | — | — | — | — |
| 30 | Ignition TTL cylinder 4 | — | — | — | — | — | — | — | — |
| 31 | Ignition TTL cylinder 5 | — | — | — | — | — | — | — | — |
| 32 | Ignition TTL cylinder 6 | — | — | — | — | — | — | — | — |
| 33 | Ignition TTL cylinder 7 | — | — | — | — | — | — | — | — |
| 34 | Ignition TTL cylinder 8 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W12 | — | 0.5 | SHADOW8-A-4 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-2-F | — | — | — |
| 1 | — | — | W13 | — | 0.5 | SHADOW8-A-7 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-1-B | — | — | — |
| 1 | — | — | W2 | — | 0.85 | SHADOW8-A-1 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | SHADOW8-B-26 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-2-A | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-2-B | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-2-C | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-2-D | — | — | — |
| 1 | — | — | W9 | — | 0.85 | SHADOW8-A-34 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | SHADOW8-A-9 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-1-A | Constant +12V | power_in | SHADOW8-B-1 | Battery constant (HOT) supply | power_in | single_source | |
| OEM-1-B | ECU power +14V (main relay) | power_in | SHADOW8-A-1 + SHADOW8-B-26 | ECU supply + Aux 9–12 power supply | power_in | single_source | |
| OEM-1-C | Start signal | digital_in | SHADOW8-A-26 | Digital input 1 | digital_in | single_source | |
| OEM-1-E | Malfunction indicator lamp (MIL) | low_side_out | SHADOW8-B-10 | Aux output 1 | low_side_out | single_source | |
| OEM-1-G | Ignition 1 (coils 1+4, wasted spark) | ignition_out | SHADOW8-B-27 | Ignition TTL cylinder 1 | ignition_out | single_source | |
| OEM-1-H | Ignition 2 (coils 2+3, wasted spark) | ignition_out | SHADOW8-B-28 | Ignition TTL cylinder 2 | ignition_out | single_source | |
| OEM-1-N | Wide-open throttle switch | digital_in | SHADOW8-A-27 | Digital input 2 | digital_in | single_source | |
| OEM-1-P | Power steering pressure switch | digital_in | SHADOW8-A-28 | Digital input 3 | digital_in | single_source | |
| OEM-1-Q | A/C request | digital_in | SHADOW8-A-29 | Digital input 4 | digital_in | single_source | |
| OEM-1-V | Neutral/clutch switch | digital_in | SHADOW8-A-30 | Digital input 5 | digital_in | single_source | |
| OEM-2-A | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-2-B | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-2-C | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-2-D | Power ground | ground | SHADOW8-A-34 + SHADOW8-A-9 | Ground 2 + Ground 1 | ground | single_source | |
| OEM-2-E | Crank position (CAS NE) | trigger_in | SHADOW8-A-5 | Crank position sensor | trigger_in | single_source | |
| OEM-2-F | AFM ground | sensor_ground | SHADOW8-A-4 + SHADOW8-A-7 | 0V analog reference + Trigger ground | sensor_ground | single_source | |
| OEM-2-G | Cam position (CAS G) | trigger_in | SHADOW8-A-6 | Sync position sensor | trigger_in | single_source | |
| OEM-2-I | Tachometer output | tacho_out | SHADOW8-B-11 | Aux output 2 | low_side_out | single_source | |
| OEM-2-K | +5V sensor supply | vref | SHADOW8-A-3 | 5.0V sensor supply | vref | single_source | |
| OEM-2-L | Idle switch (TPS) | digital_in | SHADOW8-A-31 | Digital input 6 | digital_in | single_source | |
| OEM-2-N | O2 sensor | lambda_nb_in | SHADOW8-A-11 | Analog voltage 2 | analog_in | single_source | |
| OEM-2-O | Air flow meter (AFM) | analog_in | SHADOW8-A-10 | Analog voltage 1 | analog_in | single_source | |
| OEM-2-P | Intake air temperature (IAT) | temp_in | SHADOW8-A-13 | Analog voltage 4 | analog_in | single_source | |
| OEM-2-Q | Coolant temperature (ECT) | temp_in | SHADOW8-A-12 | Analog voltage 3 | analog_in | single_source | |
| OEM-2-U | Injector 1 | injector_out | SHADOW8-B-2 | Injector cylinder 1 | injector_out | single_source | |
| OEM-2-V | Injector 2 | injector_out | SHADOW8-B-3 | Injector cylinder 2 | injector_out | single_source | |
| OEM-2-Y | Injector 3 | injector_out | SHADOW8-B-4 | Injector cylinder 3 | injector_out | single_source | |
| OEM-2-Z | Injector 4 | injector_out | SHADOW8-B-5 | Injector cylinder 4 | injector_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-1-B | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W2 | SP-14V-1 | SHADOW8-A-1 | 0.85 | no route | ECU supply | — | |
| W3 | SP-14V-1 | SHADOW8-B-26 | 0.85 | no route | Aux 9–12 power supply | — | |
| W4 | OEM-1-A | SHADOW8-B-1 | 0.85 | no route | Constant +12V | — | |
| W5 | OEM-2-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-2-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-2-C | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-2-D | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | SHADOW8-A-34 | 0.85 | no route | Ground 2 | — | |
| W10 | SP-GND-1 | SHADOW8-A-9 | 0.85 | no route | Ground 1 | — | |
| W11 | OEM-2-F | SP-0V-1 | 0.5 | no route | AFM ground | — | |
| W12 | SP-0V-1 | SHADOW8-A-4 | 0.5 | no route | 0V analog reference | — | |
| W13 | SP-0V-1 | SHADOW8-A-7 | 0.5 | no route | Trigger ground | — | |
| W14 | OEM-2-K | SHADOW8-A-3 | 0.5 | no route | +5V sensor supply | — | |
| W15 | OEM-2-E | SHADOW8-A-5 | 0.5 | no route | Crank position (CAS NE) | — | |
| W16 | OEM-2-G | SHADOW8-A-6 | 0.5 | no route | Cam position (CAS G) | — | |
| W17 | OEM-1-G | SHADOW8-B-27 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W18 | OEM-1-H | SHADOW8-B-28 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W19 | OEM-2-U | SHADOW8-B-2 | 0.5 | no route | Injector 1 | — | |
| W20 | OEM-2-V | SHADOW8-B-3 | 0.5 | no route | Injector 2 | — | |
| W21 | OEM-2-Y | SHADOW8-B-4 | 0.5 | no route | Injector 3 | — | |
| W22 | OEM-2-Z | SHADOW8-B-5 | 0.5 | no route | Injector 4 | — | |
| W23 | OEM-1-E | SHADOW8-B-10 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W24 | OEM-2-I | SHADOW8-B-11 | 0.5 | no route | Tachometer output | — | |
| W25 | OEM-2-O | SHADOW8-A-10 | 0.5 | no route | Air flow meter (AFM) | — | |
| W26 | OEM-2-N | SHADOW8-A-11 | 0.5 | no route | O2 sensor | — | |
| W27 | OEM-2-Q | SHADOW8-A-12 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W28 | OEM-2-P | SHADOW8-A-13 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W29 | OEM-1-C | SHADOW8-A-26 | 0.5 | no route | Start signal | — | |
| W30 | OEM-1-N | SHADOW8-A-27 | 0.5 | no route | Wide-open throttle switch | — | |
| W31 | OEM-1-P | SHADOW8-A-28 | 0.5 | no route | Power steering pressure switch | — | |
| W32 | OEM-1-Q | SHADOW8-A-29 | 0.5 | no route | A/C request | — | |
| W33 | OEM-1-V | SHADOW8-A-30 | 0.5 | no route | Neutral/clutch switch | — | |
| W34 | OEM-2-L | SHADOW8-A-31 | 0.5 | no route | Idle switch (TPS) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| connector | 4-1437290-1 | TE | Superseal 1.0 34-way plug, Key 2 | 1.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (4)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | PHYS_REQUIRED_OPEN | SHADOW8-B-21 | SHADOW8-B-21 "Digital input 10 / ignition switch" is required but not wired. |
| info | NET_FAMILY | OEM-2-I ↔ SHADOW8-B-11 | OEM-2-I "Tachometer output" [tacho_out] is wired to SHADOW8-B-11 "Aux output 2" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up. |
| info | NET_FAMILY | OEM-2-P ↔ SHADOW8-A-13 | OEM-2-P "Intake air temperature (IAT)" [temp_in] is wired to SHADOW8-A-13 "Analog voltage 4" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-2-Q ↔ SHADOW8-A-12 | OEM-2-Q "Coolant temperature (ECT)" [temp_in] is wired to SHADOW8-A-12 "Analog voltage 3" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-04. Review every wire against both manuals before building. Open items: - SHADOW8-B 21: Digital input 10 / ignition switch: required by Emtron Shadow 8 but no stock pin feeds it; wire by hand
Sources
| Reliability | Kind | Title | URL |
|---|---|---|---|
| 4 | datasheet | Emtron Shadow 8 ECU datasheet | https://docs.emtronaustralia.com.au/engine-management/datasheets/shadow-8-datasheet/index.html |
| 4 | vendor_doc | Emtron Shadow 8 pinout | https://docs.emtronaustralia.com.au/engine-management/wiring/shadow-8/shadow-8-pinout/index.html |
| 4 | vendor_doc | Link G4X MX5X install manual (NA 1.6/1.8) | https://linkecu.com/documentation/MX5X.pdf |