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 KV12-D-1 · ECU 14V Supply — 0.85 mm² (≈18 AWG) — — — × W4 SP-14V-1 KV12-D-2 · Auxiliary Output 13-16 14V Supply — 0.85 mm² (≈18 AWG) — — — × W5 SP-14V-1 KV12-D-20 · Auxiliary Output 9-12 14V Supply — 0.85 mm² (≈18 AWG) — — — × W6 OEM-3-A · Power ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W7 OEM-3-B · Power ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W8 OEM-4-A · Power ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W9 SP-GND-1 KV12-A-19 · ECU Ground — 0.85 mm² (≈18 AWG) — — — × W10 SP-GND-1 KV12-B-34 · ECU Ground — 0.85 mm² (≈18 AWG) — — — × W11 SP-GND-1 KV12-B-9 · ECU Ground — 0.85 mm² (≈18 AWG) — — — × W12 SP-GND-1 KV12-C-1 · ECU Ground — 0.85 mm² (≈18 AWG) — — — × W13 SP-GND-1 KV12-C-26 · ECU Ground — 0.85 mm² (≈18 AWG) — — — × W14 OEM-4-O · Signal ground SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W15 SP-0V-1 KV12-C-17 · Analog Sensor 0V Reference — 0.5 mm² (≈20 AWG) — — — × W16 SP-0V-1 KV12-C-25 · Analog Sensor 0V Reference — 0.5 mm² (≈20 AWG) — — — × W17 OEM-4-L · +5V sensor supply KV12-D-21 · Sensor Supply Vref1: 5.0V — 0.5 mm² (≈20 AWG) — — — × W18 OEM-3-Y · Crank position (CKP) KV12-D-4 · Crank Index Sensor + — 0.5 mm² (≈20 AWG) — — — × W19 SP-0V-1 KV12-D-5 · Crank Index Sensor - — 0.5 mm² (≈20 AWG) — — — × W20 OEM-3-V · Cam position (CMP) KV12-D-6 · Sync Sensor + — 0.5 mm² (≈20 AWG) — — — × W21 SP-0V-1 KV12-D-7 · Sync Sensor - — 0.5 mm² (≈20 AWG) — — — × W22 OEM-4-M · Knock sensor KV12-D-11 · Knock 1 + — 0.5 mm² (≈20 AWG) — — — × W23 OEM-3-F · Ignition 1 (coils 1+4, wasted spark) KV12-B-26 · Ignition Channel 1 — 0.5 mm² (≈20 AWG) — — — × W24 OEM-3-I · Ignition 2 (coils 2+3, wasted spark) KV12-B-27 · Ignition Channel 2 — 0.5 mm² (≈20 AWG) — — — × W25 OEM-2-A · Injector 1 KV12-B-1 · Injection Channel 1 — 0.5 mm² (≈20 AWG) — — — × W26 OEM-2-D · Injector 2 KV12-B-2 · Injection Channel 2 — 0.5 mm² (≈20 AWG) — — — × W27 OEM-2-G · Injector 3 KV12-B-3 · Injection Channel 3 — 0.5 mm² (≈20 AWG) — — — × W28 OEM-2-J · Injector 4 KV12-B-4 · Injection Channel 4 — 0.5 mm² (≈20 AWG) — — — × W29 OEM-2-B · Cooling fan relay KV12-D-9 · EFI Relay Output (Low Side 200mA) — 0.5 mm² (≈20 AWG) — — — × W30 OEM-2-C · Condenser fan relay KV12-B-14 · Auxiliary Output 5 — 0.5 mm² (≈20 AWG) — — — × W31 OEM-2-K · A/C clutch relay KV12-B-15 · Auxiliary Output 6 — 0.5 mm² (≈20 AWG) — — — × W32 OEM-2-M · Fuel pump relay KV12-B-16 · Auxiliary Output 7 — 0.5 mm² (≈20 AWG) — — — × W33 OEM-3-H · Main relay KV12-B-17 · Auxiliary Output 8 — 0.5 mm² (≈20 AWG) — — — × W34 OEM-3-J · Front O2 heater KV12-A-10 · Lambda 1 Heater - — 0.5 mm² (≈20 AWG) — — — × W35 OEM-3-P · Rear O2 heater KV12-A-11 · Lambda 2 Heater - — 0.5 mm² (≈20 AWG) — — — × W36 OEM-2-Q · ISC valve low side KV12-B-10 · Auxiliary Output 1 — 0.5 mm² (≈20 AWG) — — — × W37 OEM-2-E · EGR valve KV12-B-11 · Auxiliary Output 2 — 0.5 mm² (≈20 AWG) — — — × W38 OEM-2-F · EGR valve KV12-B-12 · Auxiliary Output 3 — 0.5 mm² (≈20 AWG) — — — × W39 OEM-2-H · EGR valve KV12-B-13 · Auxiliary Output 4 — 0.5 mm² (≈20 AWG) — — — × W40 OEM-2-I · EGR valve KV12-B-5 · Injection Channel 5 — 0.5 mm² (≈20 AWG) — — — × W41 OEM-2-N · VTCS solenoid (intake butterflies) KV12-B-6 · Injection Channel 6 — 0.5 mm² (≈20 AWG) — — — × W42 OEM-2-R · Malfunction indicator lamp (MIL) KV12-B-7 · Injection Channel 7 — 0.5 mm² (≈20 AWG) — — — × W43 OEM-3-E · Charcoal canister purge KV12-B-8 · Injection Channel 8 — 0.5 mm² (≈20 AWG) — — — × W44 OEM-3-M · Alternator control KV12-A-1 · Injection Channel 9 — 0.5 mm² (≈20 AWG) — — — × W45 OEM-3-U · Charge lamp KV12-A-2 · Injection Channel 10 — 0.5 mm² (≈20 AWG) — — — × W46 OEM-4-D · VVT oil-control solenoid KV12-A-3 · Injection Channel 11 — 0.5 mm² (≈20 AWG) — — — × W47 OEM-4-X · Mass air flow (MAF) KV12-C-2 · Analog Input Channel 1 — 0.5 mm² (≈20 AWG) — — — × W48 OEM-4-AE · Pressure sensor (Mazda: EGR boost sensor) KV12-C-3 · Analog Input Channel 2 — 0.5 mm² (≈20 AWG) — — — × W49 OEM-4-V · Throttle position (TPS) KV12-C-4 · Analog Input Channel 3 — 0.5 mm² (≈20 AWG) — — — × W50 OEM-4-AA · Rear O2 signal KV12-C-5 · Analog Input Channel 4 — 0.5 mm² (≈20 AWG) — — — × W51 OEM-4-W · Front O2 signal KV12-C-6 · Analog Input Channel 5 — 0.5 mm² (≈20 AWG) — — — × W52 OEM-4-P · Coolant temperature (ECT) KV12-C-7 · Analog Input Channel 6 — 0.5 mm² (≈20 AWG) — — — × W53 OEM-4-N · Intake air temperature (IAT) KV12-C-8 · Analog Input Channel 7 — 0.5 mm² (≈20 AWG) — — — × W54 OEM-4-AD · Fuel level KV12-C-9 · Analog Input Channel 8 — 0.5 mm² (≈20 AWG) — — — × W55 OEM-3-T · Vehicle speed KV12-C-27 · Digital Input 1 — 0.5 mm² (≈20 AWG) — — — × W56 OEM-3-S · Immobiliser KV12-C-28 · Digital Input 2 — 0.5 mm² (≈20 AWG) — — — × W57 OEM-4-B · Brake switch KV12-C-29 · Digital Input 3 — 0.5 mm² (≈20 AWG) — — — × W58 OEM-4-C · Power steering pressure switch KV12-C-30 · Digital Input 4 — 0.5 mm² (≈20 AWG) — — — × W59 OEM-4-F · A/C request KV12-C-31 · Digital Input 5 — 0.5 mm² (≈20 AWG) — — — × W60 OEM-4-H · Neutral switch KV12-C-32 · Digital Input 6 — 0.5 mm² (≈20 AWG) — — — × W61 OEM-4-I · Clutch switch KV12-C-33 · Digital Input 7 — 0.5 mm² (≈20 AWG) — — — × W62 OEM-4-J · VTCS vacuum switch KV12-C-34 · Digital Input 8 — 0.5 mm² (≈20 AWG) — — — ×