W1 OEM-T121-1 · ECU ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W2 OEM-T121-2 · ECU ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W3 SP-GND-1 SPEEDUINO-A-10 · Ground — 0.85 mm² (≈18 AWG) — — — × W4 SP-GND-1 SPEEDUINO-A-9 · Ground — 0.85 mm² (≈18 AWG) — — — × W5 OEM-T121-108 · Sensor ground SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W6 OEM-T121-29 · MAF sensor ground (G70) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W7 OEM-T121-34 · Accelerator pedal position 1 ground (G79) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W8 OEM-T121-36 · Accelerator pedal position 2 ground (G185) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W9 OEM-T121-90 · Crank position sensor ground (G28) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W10 OEM-T121-91 · Throttle position sensor ground (G187/G188) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W11 SP-0V-1 SPEEDUINO-A-12 · Ground — 0.5 mm² (≈20 AWG) — — — × W12 SP-0V-1 SPEEDUINO-A-23 · Ground — 0.5 mm² (≈20 AWG) — — — × W13 OEM-T121-72 · Accelerator pedal position 1 5V supply (G79) SP-5V1-1 — 0.5 mm² (≈20 AWG) — — — × W14 OEM-T121-83 · Throttle position sensor 5V supply (G187/G188) SP-5V1-1 — 0.5 mm² (≈20 AWG) — — — × W15 OEM-T121-99 · Knock sensor 5V supply (G61/G66) SP-5V1-1 — 0.5 mm² (≈20 AWG) — — — × W16 SP-5V1-1 SPEEDUINO-A-13 · 5V — 0.5 mm² (≈20 AWG) — — — × W17 OEM-T121-73 · Accelerator pedal position 2 5V supply (G185) SP-5V2-1 — 0.5 mm² (≈20 AWG) — — — × W18 OEM-T121-98 · Cam + boost sensor 5V supply (G40/G31) SP-5V2-1 — 0.5 mm² (≈20 AWG) — — — × W19 SP-5V2-1 SPEEDUINO-A-28 · 5V — 0.5 mm² (≈20 AWG) — — — × W20 OEM-T121-82 · Crank position sensor (G28) SPEEDUINO-A-25 · Crank input / VR1+ — 0.5 mm² (≈20 AWG) — — — × W21 OEM-T121-86 · Camshaft position sensor (G40) SPEEDUINO-A-24 · Cam input / VR2+ — 0.5 mm² (≈20 AWG) — — — × W22 OEM-T121-102 · Ignition coil 1 (N127) SPEEDUINO-A-7 · Ignition 1 — 0.5 mm² (≈20 AWG) — — — × W23 OEM-T121-95 · Ignition coil 2 (N128) SPEEDUINO-A-34 · Ignition 2 — 0.5 mm² (≈20 AWG) — — — × W24 OEM-T121-103 · Ignition coil 3 (N158) SPEEDUINO-A-33 · Ignition 3 — 0.5 mm² (≈20 AWG) — — — × W25 OEM-T121-94 · Ignition coil 4 (N163) SPEEDUINO-A-8 · Ignition 4 — 0.5 mm² (≈20 AWG) — — — × W26 OEM-T121-96 · Injector 1 (N30) SPEEDUINO-A-1 · Injector 1 — 0.5 mm² (≈20 AWG) — — — × W27 OEM-T121-89 · Injector 2 (N31) SPEEDUINO-A-2 · Injector 2 — 0.5 mm² (≈20 AWG) — — — × W28 OEM-T121-97 · Injector 3 (N32) SPEEDUINO-A-3 · Injector 3 — 0.5 mm² (≈20 AWG) — — — × W29 OEM-T121-88 · Injector 4 (N33) SPEEDUINO-A-5 · Injector 4 — 0.5 mm² (≈20 AWG) — — — × W30 OEM-T121-118 · Throttle motor G186 (−) SPEEDUINO-A-32 · Idle stepper 1B — 0.5 mm² (≈20 AWG) — — — × W31 OEM-T121-117 · Throttle motor G186 (+) SPEEDUINO-A-31 · Idle stepper 1A — 0.5 mm² (≈20 AWG) — — — × W32 OEM-T121-101 · Boost pressure sensor (G31) SPEEDUINO-A-11 · MAP sensor (0-5V) — 0.5 mm² (≈20 AWG) — — — × W33 OEM-T121-33 · Accelerator pedal position 1 (G79) SPEEDUINO-A-22 · TPS input — 0.5 mm² (≈20 AWG) — — — × W34 OEM-T121-93 · Engine coolant temperature (G62) SPEEDUINO-A-19 · Coolant temp (CLT) — 0.5 mm² (≈20 AWG) — — — × W35 OEM-T121-65 · Fuel pump relay control SPEEDUINO-A-16 · Proto area 3 (fuel pump) — 0.5 mm² (≈20 AWG) — — — × W36 OEM-T121-66 · Secondary-air pump relay (J299) SPEEDUINO-A-15 · Proto area 2 (fan) — 0.5 mm² (≈20 AWG) — — — × W37 OEM-T121-5 · Wideband lambda heater (Z19) SPEEDUINO-A-36 · Idle 2 (3-wire idle) — 0.5 mm² (≈20 AWG) — — — × W38 OEM-T121-63 · Post-cat lambda heater (Z29) SPEEDUINO-A-35 · Boost — 0.5 mm² (≈20 AWG) — — — × W39 OEM-T121-104 · Boost control solenoid (N75) SPEEDUINO-A-37 · PWM idle — 0.5 mm² (≈20 AWG) — — — × W40 OEM-T121-105 · Diverter valve (N249) SPEEDUINO-A-38 · VVT — 0.5 mm² (≈20 AWG) — — — × W41 OEM-T121-37 · Engine speed signal (tacho to cluster) SPEEDUINO-A-17 · Proto area 4 (tachometer) — 0.5 mm² (≈20 AWG) — — — × W42 OEM-T121-68 · Post-cat lambda signal (G130) SPEEDUINO-A-21 · O2 sensor — 0.5 mm² (≈20 AWG) — — — × W43 OEM-T121-85 · Intake air temperature (G42) SPEEDUINO-A-20 · Inlet air temp (IAT) — 0.5 mm² (≈20 AWG) — — — × W44 OEM-T121-54 · Road speed signal (VSS) SPEEDUINO-A-14 · Proto area 1 (flex fuel) — 0.5 mm² (≈20 AWG) — — — ×