W1 OEM-T121-121 · ECM + coil power (J271 relay feed) SP-14V-1 — 0.85 mm² (≈18 AWG) — — — × W2 OEM-T121-21 · ECM power (J271 relay feed) SP-14V-1 — 0.85 mm² (≈18 AWG) — — — × W3 SP-14V-1 FT450-A-A13 · +12V switched — 0.85 mm² (≈18 AWG) — — — × W4 OEM-T121-1 · ECU ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W5 OEM-T121-2 · ECU ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W6 SP-GND-1 FT450-A-A7 · Power ground — 0.85 mm² (≈18 AWG) — — — × W7 OEM-T121-108 · Sensor ground SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W8 OEM-T121-29 · MAF sensor ground (G70) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W9 OEM-T121-34 · Accelerator pedal position 1 ground (G79) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W10 OEM-T121-36 · Accelerator pedal position 2 ground (G185) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W11 OEM-T121-90 · Crank position sensor ground (G28) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W12 OEM-T121-91 · Throttle position sensor ground (G187/G188) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W13 SP-0V-1 FT450-A-A12 · Signal ground — 0.5 mm² (≈20 AWG) — — — × W14 OEM-T121-72 · Accelerator pedal position 1 5V supply (G79) SP-5V1-1 — 0.5 mm² (≈20 AWG) — — — × W15 OEM-T121-73 · Accelerator pedal position 2 5V supply (G185) SP-5V1-1 — 0.5 mm² (≈20 AWG) — — — × W16 OEM-T121-83 · Throttle position sensor 5V supply (G187/G188) SP-5V1-1 — 0.5 mm² (≈20 AWG) — — — × W17 OEM-T121-98 · Cam + boost sensor 5V supply (G40/G31) SP-5V1-1 — 0.5 mm² (≈20 AWG) — — — × W18 OEM-T121-99 · Knock sensor 5V supply (G61/G66) SP-5V1-1 — 0.5 mm² (≈20 AWG) — — — × W19 SP-5V1-1 FT450-A-A14 · +5V sensor supply — 0.5 mm² (≈20 AWG) — — — × W20 OEM-T121-82 · Crank position sensor (G28) FT450-A-A18 · RPM reference (crank -) — 0.5 mm² (≈20 AWG) — — — × W21 SP-0V-1 FT450-A-A18 · RPM reference (crank -) — 0.5 mm² (≈20 AWG) — — — × W22 OEM-T121-86 · Camshaft position sensor (G40) FT450-A-A17 · Phase input (cam) — 0.5 mm² (≈20 AWG) — — — × W23 OEM-T121-102 · Ignition coil 1 (N127) FT450-A-A8 · Ignition 1 — 0.5 mm² (≈20 AWG) — — — × W24 OEM-T121-95 · Ignition coil 2 (N128) FT450-A-A9 · Ignition 2 — 0.5 mm² (≈20 AWG) — — — × W25 OEM-T121-103 · Ignition coil 3 (N158) FT450-A-A10 · Ignition 3 — 0.5 mm² (≈20 AWG) — — — × W26 OEM-T121-94 · Ignition coil 4 (N163) FT450-A-A11 · Ignition 4 — 0.5 mm² (≈20 AWG) — — — × W27 OEM-T121-96 · Injector 1 (N30) FT450-A-A1 · Injector 1 (Bank A) — 0.5 mm² (≈20 AWG) — — — × W28 OEM-T121-89 · Injector 2 (N31) FT450-A-A2 · Injector 2 (Bank A) — 0.5 mm² (≈20 AWG) — — — × W29 OEM-T121-97 · Injector 3 (N32) FT450-A-A1 · Injector 1 (Bank A) — 0.5 mm² (≈20 AWG) — — — × W30 OEM-T121-88 · Injector 4 (N33) FT450-A-A2 · Injector 2 (Bank A) — 0.5 mm² (≈20 AWG) — — — × W31 OEM-T121-53 · MAF sensor signal (G70) FT450-A-A20 · White input 1 — 0.5 mm² (≈20 AWG) — — — × W32 OEM-T121-101 · Boost pressure sensor (G31) FT450-A-A23 · White input 4 (oil pressure) — 0.5 mm² (≈20 AWG) — — — × W33 OEM-T121-33 · Accelerator pedal position 1 (G79) FT450-A-A21 · White input 2 — 0.5 mm² (≈20 AWG) — — — × W34 OEM-T121-84 · Throttle position sensor 1 (G187) FT450-A-A22 · White input 3 (TPS) — 0.5 mm² (≈20 AWG) — — — × W35 OEM-T121-35 · Accelerator pedal position 2 (G185) FT450-A-A25 · White input 6 (fuel pressure) — 0.5 mm² (≈20 AWG) — — — × W36 OEM-T121-93 · Engine coolant temperature (G62) FT450-A-A24 · White input 5 (water temp) — 0.5 mm² (≈20 AWG) — — — × W37 OEM-T121-65 · Fuel pump relay control FT450-A-A6 · Aux 4 (fuel pump / relays) — 0.5 mm² (≈20 AWG) — — — × W38 OEM-T121-66 · Secondary-air pump relay (J299) FT450-A-A3 · Aux 1 — 0.5 mm² (≈20 AWG) — — — × W39 OEM-T121-5 · Wideband lambda heater (Z19) FT450-A-A4 · Aux 2 — 0.5 mm² (≈20 AWG) — — — × W40 OEM-T121-63 · Post-cat lambda heater (Z29) FT450-A-A5 · Aux 3 — 0.5 mm² (≈20 AWG) — — — × W41 OEM-T121-85 · Intake air temperature (G42) FT450-A-A26 · White input 7 (air temp) — 0.5 mm² (≈20 AWG) — — — × W42 OEM-T121-60 · CAN bus high FT450-A-A16 · CAN A HIGH — 0.5 mm² (≈20 AWG) — — — × W43 OEM-T121-58 · CAN bus low FT450-A-A15 · CAN A LOW — 0.5 mm² (≈20 AWG) — — — ×