W1 OEM-4-B · ECU power +12V (main relay) SP-14V-1 — 0.85 mm² (≈18 AWG) — — — × W2 NEW-KEYON-1 MAIN-R-COIL+ · Relay coil positive (ignition-switched +12V) — 0.5 mm² (≈20 AWG) — — — × W3 NEW-BATT-1 MAIN-R-IN · Relay contact input (battery + via main fuse) — 0.85 mm² (≈18 AWG) — — — × W4 MAIN-R-COIL- · Relay coil negative (ECU low-side driver) SP-GND-1 — 0.5 mm² (≈20 AWG) — — — × W5 MAIN-R-OUT · Relay contact output (switched +12V bus) M800-A-26 · VBAT Battery Positive — 0.85 mm² (≈18 AWG) — — — × W6 OEM-4-A · Chassis ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W7 OEM-4-C · Chassis ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W8 OEM-4-D · Chassis ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W9 OEM-4-K · Chassis ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W10 SP-GND-1 M800-A-10 · GND Battery Negative — 0.85 mm² (≈18 AWG) — — — × W11 SP-GND-1 M800-A-11 · GND Battery Negative — 0.85 mm² (≈18 AWG) — — — × W12 OEM-3-O · Sensor ground SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W13 OEM-4-H · Crank pickup timing ground (CKP gnd) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W14 SP-0V-1 M800-B-14 · 0V Comms Reference — 0.5 mm² (≈20 AWG) — — — × W15 SP-0V-1 M800-B-15 · 0V Auxiliary Sensor Supply — 0.5 mm² (≈20 AWG) — — — × W16 SP-0V-1 M800-B-16 · 0V Engine Sensor Supply — 0.5 mm² (≈20 AWG) — — — × W17 OEM-3-I · +5V sensor reference M800-A-2 · 5V Engine Sensor Supply — 0.5 mm² (≈20 AWG) — — — × W18 OEM-4-E · Crank position (CKP) sensor M800-B-1 · Crank Reference Timing Input — 0.5 mm² (≈20 AWG) — — — × W19 OEM-4-G · CAS SGC (cam sync) M800-B-2 · Cam Sync Timing Input — 0.5 mm² (≈20 AWG) — — — × W20 OEM-4-N · Ignition coil trigger (cyl 1&4) M800-A-3 · IGN1 — 0.5 mm² (≈20 AWG) — — — × W21 OEM-4-R · Ignition coil trigger (cyl 2&3) M800-A-4 · IGN2 — 0.5 mm² (≈20 AWG) — — — × W22 OEM-4-U · Injector 1 (cyl 1) M800-A-19 · INJ1 — 0.5 mm² (≈20 AWG) — — — × W23 OEM-4-V · Injector 2 (cyl 2) M800-A-20 · INJ2 — 0.5 mm² (≈20 AWG) — — — × W24 OEM-4-W · Injector 3 (cyl 3) M800-A-21 · INJ3 — 0.5 mm² (≈20 AWG) — — — × W25 OEM-4-X · Injector 4 (cyl 4) M800-A-22 · INJ4 — 0.5 mm² (≈20 AWG) — — — × W26 OEM-3-B · MAF sensor input M800-A-15 · Analog Voltage Input 2 — 0.5 mm² (≈20 AWG) — — — × W27 OEM-3-F · Throttle position (TPS) M800-A-14 · AV1 — 0.5 mm² (≈20 AWG) — — — × W28 OEM-3-G · Engine coolant temp (CLT) M800-B-3 · Analog Temperature Input 1 — 0.5 mm² (≈20 AWG) — — — × W29 OEM-1-A · Cooling fan relay (low-side) M800-A-18 · AUX1 — 0.5 mm² (≈20 AWG) — — — × W30 OEM-1-B · A/C condenser fan relay M800-A-1 · AUX2 — 0.5 mm² (≈20 AWG) — — — × W31 OEM-1-G · A/C clutch relay M800-A-23 · AUX3 — 0.5 mm² (≈20 AWG) — — — × W32 OEM-1-U · Fuel pump relay (low-side) M800-A-24 · AUX4 — 0.5 mm² (≈20 AWG) — — — × W33 OEM-3-M · Front O2 heater control M800-A-31 · AUX5 — 0.5 mm² (≈20 AWG) — — — × W34 OEM-1-E · Check engine light (MIL) M800-A-32 · AUX6 — 0.5 mm² (≈20 AWG) — — — × W35 OEM-4-J · PRC solenoid (FPR control) M800-A-33 · AUX7 — 0.5 mm² (≈20 AWG) — — — × W36 OEM-4-O · EGR vent solenoid M800-A-34 · AUX8 — 0.5 mm² (≈20 AWG) — — — × W37 OEM-4-P · EGR vacuum solenoid M800-A-27 · INJ5 — 0.5 mm² (≈20 AWG) — — — × W38 OEM-4-Q · Idle air control (IAC) valve M800-A-28 · INJ6 — 0.5 mm² (≈20 AWG) — — — × W39 OEM-4-T · EVAP purge solenoid M800-A-29 · INJ7 — 0.5 mm² (≈20 AWG) — — — × W40 OEM-3-H · EGR boost sensor M800-A-16 · Analog Voltage Input 3 — 0.5 mm² (≈20 AWG) — — — × W41 OEM-3-N · EGR boost sensor (2nd channel) M800-A-17 · Analog Voltage Input 4 — 0.5 mm² (≈20 AWG) — — — × W42 OEM-3-C · Front O2 sensor input M800-A-25 · Analog Voltage Input 5 — 0.5 mm² (≈20 AWG) — — — × W43 OEM-3-D · Rear O2 sensor input M800-B-20 · Analog Voltage Input 6 — 0.5 mm² (≈20 AWG) — — — × W44 OEM-3-K · Intake air temp (IAT) M800-B-4 · Analog Temperature Input 2 — 0.5 mm² (≈20 AWG) — — — × W45 OEM-3-J · EGR valve position sensor M800-B-21 · AV7 — 0.5 mm² (≈20 AWG) — — — × W46 OEM-1-M · Vehicle speed sensor (VSS) M800-B-8 · Digital Input 1 — 0.5 mm² (≈20 AWG) — — — × W47 OEM-1-K · A/C pressure switch (A/C request) M800-B-9 · Digital Input 2 — 0.5 mm² (≈20 AWG) — — — × W48 OEM-1-L · Clutch switch M800-B-10 · Digital Input 3 — 0.5 mm² (≈20 AWG) — — — × W49 OEM-1-Q · Brake switch M800-B-11 · Digital Input 4 — 0.5 mm² (≈20 AWG) — — — × W50 OEM-3-L · Idle switch (closed throttle) M800-B-22 · AV8 — 0.5 mm² (≈20 AWG) — — — ×