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) FT450-A-A13 · +12V switched — 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 FT450-A-A7 · Power ground — 0.85 mm² (≈18 AWG) — — — × W11 OEM-3-O · Sensor ground SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W12 OEM-4-H · Crank pickup timing ground (CKP gnd) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W13 SP-0V-1 FT450-A-A12 · Signal ground — 0.5 mm² (≈20 AWG) — — — × W14 OEM-3-I · +5V sensor reference FT450-A-A14 · +5V sensor supply — 0.5 mm² (≈20 AWG) — — — × W15 OEM-4-E · Crank position (CKP) sensor FT450-A-A18 · RPM reference (crank -) — 0.5 mm² (≈20 AWG) — — — × W16 SP-0V-1 FT450-A-A18 · RPM reference (crank -) — 0.5 mm² (≈20 AWG) — — — × W17 OEM-4-G · CAS SGC (cam sync) FT450-A-A17 · Phase input (cam) — 0.5 mm² (≈20 AWG) — — — × W18 OEM-4-N · Ignition coil trigger (cyl 1&4) FT450-A-A8 · Ignition 1 — 0.5 mm² (≈20 AWG) — — — × W19 OEM-4-R · Ignition coil trigger (cyl 2&3) FT450-A-A9 · Ignition 2 — 0.5 mm² (≈20 AWG) — — — × W20 OEM-4-U · Injector 1 (cyl 1) FT450-A-A1 · Injector 1 (Bank A) — 0.5 mm² (≈20 AWG) — — — × W21 OEM-4-V · Injector 2 (cyl 2) FT450-A-A2 · Injector 2 (Bank A) — 0.5 mm² (≈20 AWG) — — — × W22 OEM-4-W · Injector 3 (cyl 3) FT450-A-A1 · Injector 1 (Bank A) — 0.5 mm² (≈20 AWG) — — — × W23 OEM-4-X · Injector 4 (cyl 4) FT450-A-A2 · Injector 2 (Bank A) — 0.5 mm² (≈20 AWG) — — — × W24 OEM-3-B · MAF sensor input FT450-A-A20 · White input 1 — 0.5 mm² (≈20 AWG) — — — × W25 OEM-3-F · Throttle position (TPS) FT450-A-A21 · White input 2 — 0.5 mm² (≈20 AWG) — — — × W26 OEM-3-G · Engine coolant temp (CLT) FT450-A-A24 · White input 5 (water temp) — 0.5 mm² (≈20 AWG) — — — × W27 OEM-1-A · Cooling fan relay (low-side) FT450-A-A6 · Aux 4 (fuel pump / relays) — 0.5 mm² (≈20 AWG) — — — × W28 OEM-1-B · A/C condenser fan relay FT450-A-A3 · Aux 1 — 0.5 mm² (≈20 AWG) — — — × W29 OEM-1-G · A/C clutch relay FT450-A-A4 · Aux 2 — 0.5 mm² (≈20 AWG) — — — × W30 OEM-1-U · Fuel pump relay (low-side) FT450-A-A5 · Aux 3 — 0.5 mm² (≈20 AWG) — — — × W31 OEM-3-H · EGR boost sensor FT450-A-A22 · White input 3 (TPS) — 0.5 mm² (≈20 AWG) — — — × W32 OEM-3-N · EGR boost sensor (2nd channel) FT450-A-A23 · White input 4 (oil pressure) — 0.5 mm² (≈20 AWG) — — — × W33 OEM-3-C · Front O2 sensor input FT450-A-A25 · White input 6 (fuel pressure) — 0.5 mm² (≈20 AWG) — — — × W34 OEM-3-K · Intake air temp (IAT) FT450-A-A26 · White input 7 (air temp) — 0.5 mm² (≈20 AWG) — — — ×