W1 OEM-2-P · ISC valve +14V feed SP-14V-1 — 0.85 mm² (≈18 AWG) — — — × W2 OEM-4-AF · ECU power +14V (main relay) SP-14V-1 — 0.85 mm² (≈18 AWG) — — — × W3 SP-14V-1 M170-A-23 · Battery Positive — 0.85 mm² (≈18 AWG) — — — × W4 SP-14V-1 M170-A-32 · Battery Positive — 0.85 mm² (≈18 AWG) — — — × W5 SP-14V-1 M170-A-41 · Battery Positive — 0.85 mm² (≈18 AWG) — — — × W6 OEM-4-AG · Constant +12V M170-A-54 · Battery Backup — 0.85 mm² (≈18 AWG) — — — × W7 OEM-3-A · Power ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W8 OEM-3-B · Power ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W9 OEM-4-A · Power ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W10 SP-GND-1 M170-A-14 · Battery Negative 1 — 0.85 mm² (≈18 AWG) — — — × W11 SP-GND-1 M170-A-15 · Battery Negative 2 — 0.85 mm² (≈18 AWG) — — — × W12 SP-GND-1 M170-A-19 · Battery Negative 3 — 0.85 mm² (≈18 AWG) — — — × W13 SP-GND-1 M170-A-20 · Battery Negative 4 — 0.85 mm² (≈18 AWG) — — — × W14 SP-GND-1 M170-A-21 · Battery Negative 5 — 0.85 mm² (≈18 AWG) — — — × W15 OEM-4-O · Signal ground SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W16 SP-0V-1 M170-A-11 · Sensor 0V A — 0.5 mm² (≈20 AWG) — — — × W17 SP-0V-1 M170-A-27 · Sensor 0V B — 0.5 mm² (≈20 AWG) — — — × W18 OEM-4-L · +5V sensor supply M170-A-16 · Sensor 5.0V A — 0.5 mm² (≈20 AWG) — — — × W19 OEM-3-Y · Crank position (CKP) M170-A-49 · Universal Digital Input 1 — 0.5 mm² (≈20 AWG) — — — × W20 OEM-3-V · Cam position (CMP) M170-A-56 · Universal Digital Input 2 — 0.5 mm² (≈20 AWG) — — — × W21 OEM-4-M · Knock sensor M170-A-29 · Knock Input 1 — 0.5 mm² (≈20 AWG) — — — × W22 OEM-3-F · Ignition 1 (coils 1+4, wasted spark) M170-A-1 · Low Side Ignition 1 — 0.5 mm² (≈20 AWG) — — — × W23 OEM-3-I · Ignition 2 (coils 2+3, wasted spark) M170-A-5 · Low Side Ignition 2 — 0.5 mm² (≈20 AWG) — — — × W24 OEM-2-A · Injector 1 M170-A-33 · Peak Hold Injector 1 — 0.5 mm² (≈20 AWG) — — — × W25 OEM-2-D · Injector 2 M170-A-43 · Low Side Injector 1 — 0.5 mm² (≈20 AWG) — — — × W26 OEM-2-G · Injector 3 M170-A-50 · Peak Hold Injector 2 — 0.5 mm² (≈20 AWG) — — — × W27 OEM-2-J · Injector 4 M170-A-51 · Low Side Injector 2 — 0.5 mm² (≈20 AWG) — — — × W28 OEM-2-B · Cooling fan relay M170-A-63 · Peak Hold Injector 3 — 0.5 mm² (≈20 AWG) — — — × W29 OEM-2-C · Condenser fan relay M170-A-66 · Peak Hold Injector 4 — 0.5 mm² (≈20 AWG) — — — × W30 OEM-2-K · A/C clutch relay M170-A-24 · Peak Hold Injector 5 — 0.5 mm² (≈20 AWG) — — — × W31 OEM-2-M · Fuel pump relay M170-A-42 · Peak Hold Injector 6 — 0.5 mm² (≈20 AWG) — — — × W32 OEM-3-H · Main relay M170-A-57 · Peak Hold Injector 7 — 0.5 mm² (≈20 AWG) — — — × W33 OEM-3-J · Front O2 heater M170-A-9 · Half Bridge Output 1 — 0.5 mm² (≈20 AWG) — — — × W34 OEM-3-P · Rear O2 heater M170-A-8 · Half Bridge Output 2 — 0.5 mm² (≈20 AWG) — — — × W35 OEM-2-Q · ISC valve low side M170-A-62 · Peak Hold Injector 8 — 0.5 mm² (≈20 AWG) — — — × W36 OEM-2-E · EGR valve M170-A-59 · Half Bridge Output 3 — 0.5 mm² (≈20 AWG) — — — × W37 OEM-2-F · EGR valve M170-A-65 · Half Bridge Output 4 — 0.5 mm² (≈20 AWG) — — — × W38 OEM-2-H · EGR valve M170-A-58 · Half Bridge Output 5 — 0.5 mm² (≈20 AWG) — — — × W39 OEM-2-I · EGR valve M170-A-64 · Half Bridge Output 6 — 0.5 mm² (≈20 AWG) — — — × W40 OEM-4-X · Mass air flow (MAF) M170-A-26 · Analogue Voltage Input 1 — 0.5 mm² (≈20 AWG) — — — × W41 OEM-4-AE · Pressure sensor (Mazda: EGR boost sensor) M170-A-18 · Analogue Voltage Input 2 — 0.5 mm² (≈20 AWG) — — — × W42 OEM-4-V · Throttle position (TPS) M170-A-6 · Analogue Voltage Input 3 — 0.5 mm² (≈20 AWG) — — — × W43 OEM-4-AA · Rear O2 signal M170-A-7 · Analogue Voltage Input 4 — 0.5 mm² (≈20 AWG) — — — × W44 OEM-4-W · Front O2 signal M170-A-12 · Analogue Voltage Input 5 — 0.5 mm² (≈20 AWG) — — — × W45 OEM-4-P · Coolant temperature (ECT) M170-A-28 · Analogue Temperature Input 1 — 0.5 mm² (≈20 AWG) — — — × W46 OEM-4-N · Intake air temperature (IAT) M170-A-38 · Analogue Temperature Input 2 — 0.5 mm² (≈20 AWG) — — — × W47 OEM-4-AD · Fuel level M170-A-36 · Analogue Voltage Input 6 — 0.5 mm² (≈20 AWG) — — — × W48 OEM-3-T · Vehicle speed M170-A-46 · Universal Digital Input 3 — 0.5 mm² (≈20 AWG) — — — × W49 OEM-3-S · Immobiliser M170-A-45 · Universal Digital Input 4 — 0.5 mm² (≈20 AWG) — — — × W50 OEM-4-B · Brake switch M170-A-52 · Universal Digital Input 5 — 0.5 mm² (≈20 AWG) — — — × W51 OEM-4-C · Power steering pressure switch M170-A-53 · Universal Digital Input 6 — 0.5 mm² (≈20 AWG) — — — × W52 OEM-4-F · A/C request M170-A-13 · Universal Digital Input 7 — 0.5 mm² (≈20 AWG) — — — × W53 OEM-4-H · Neutral switch M170-A-22 · Universal Digital Input 8 — 0.5 mm² (≈20 AWG) — — — × W54 OEM-4-I · Clutch switch M170-A-35 · Analogue Voltage Input 7 — 0.5 mm² (≈20 AWG) — — — × W55 OEM-4-J · VTCS vacuum switch M170-A-44 · Analogue Voltage Input 8 — 0.5 mm² (≈20 AWG) — — — ×