W1 OEM-B78-16 · EFI main relay power (+B) SP-14V-1 — 0.85 mm² (≈18 AWG) — — — × W2 OEM-B78-7 · ETCS-i power (+BM) SP-14V-1 — 0.85 mm² (≈18 AWG) — — — × W3 OEM-B78-8 · EFI main relay power (+B2) SP-14V-1 — 0.85 mm² (≈18 AWG) — — — × W4 OEM-B78-9 · Ignition switch (IGSW) MAIN-R-COIL+ · Relay coil positive (ignition-switched +12V) — 0.5 mm² (≈20 AWG) — — — × W5 NEW-BATT-1 MAIN-R-IN · Relay contact input (battery + via main fuse) — 0.85 mm² (≈18 AWG) — — — × W6 MAIN-R-COIL- · Relay coil negative (ECU low-side driver) SP-GND-1 — 0.5 mm² (≈20 AWG) — — — × W7 MAIN-R-OUT · Relay contact output (switched +12V bus) SPEEDUINO-PWR-12V · Main power (+12 V switched) — 0.85 mm² (≈18 AWG) — — — × W8 OEM-B74-21 · Power ground (E01) SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W9 OEM-B74-31 · Power ground (E02) SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W10 OEM-B74-9 · ETCS-i ground (ME01) SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W11 OEM-B75-17 · Power ground (E1) SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W12 SP-GND-1 SPEEDUINO-A-10 · Ground — 0.85 mm² (≈18 AWG) — — — × W13 SP-GND-1 SPEEDUINO-A-9 · Ground — 0.85 mm² (≈18 AWG) — — — × W14 OEM-B74-22 · Crank/cam sensor return (NE-) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W15 OEM-B75-18 · Sensor ground (E2) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W16 OEM-B75-19 · MAF ground (EVG) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W17 OEM-B78-22 · Switch ground (EC) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W18 SP-0V-1 SPEEDUINO-A-12 · Ground — 0.5 mm² (≈20 AWG) — — — × W19 SP-0V-1 SPEEDUINO-A-23 · Ground — 0.5 mm² (≈20 AWG) — — — × W20 OEM-B75-2 · Sensor power (VC) SPEEDUINO-A-13 · 5V — 0.5 mm² (≈20 AWG) — — — × W21 OEM-B74-23 · Crank position (NE+) SPEEDUINO-A-25 · Crank input / VR1+ — 0.5 mm² (≈20 AWG) — — — × W22 OEM-B74-10 · Cam position (G2) SPEEDUINO-A-24 · Cam input / VR2+ — 0.5 mm² (≈20 AWG) — — — × W23 OEM-B74-11 · Ignition 1 (IGT, cyl 1&6) SPEEDUINO-A-7 · Ignition 1 — 0.5 mm² (≈20 AWG) — — — × W24 OEM-B74-12 · Ignition 2 (IGT2, cyl 5&2) SPEEDUINO-A-34 · Ignition 2 — 0.5 mm² (≈20 AWG) — — — × W25 OEM-B74-13 · Ignition 3 (IGT3, cyl 3&4) SPEEDUINO-A-33 · Ignition 3 — 0.5 mm² (≈20 AWG) — — — × W26 OEM-B75-5 · Injector 1 (#10) SPEEDUINO-A-1 · Injector 1 — 0.5 mm² (≈20 AWG) — — — × W27 OEM-B75-6 · Injector 2 (#20) SPEEDUINO-A-2 · Injector 2 — 0.5 mm² (≈20 AWG) — — — × W28 OEM-B74-1 · Injector 3 (#30) SPEEDUINO-A-3 · Injector 3 — 0.5 mm² (≈20 AWG) — — — × W29 OEM-B74-2 · Injector 4 (#40) SPEEDUINO-A-5 · Injector 4 — 0.5 mm² (≈20 AWG) — — — × W30 OEM-B74-3 · Injector 5 (#50) SPEEDUINO-A-1 · Injector 1 — 0.5 mm² (≈20 AWG) — — — × W31 OEM-B74-4 · Injector 6 (#60) SPEEDUINO-A-2 · Injector 2 — 0.5 mm² (≈20 AWG) — — — × W32 OEM-B74-7 · ETCS-i motor − (M−) SPEEDUINO-A-32 · Idle stepper 1B — 0.5 mm² (≈20 AWG) — — — × W33 OEM-B74-8 · ETCS-i motor + (M+) SPEEDUINO-A-31 · Idle stepper 1A — 0.5 mm² (≈20 AWG) — — — × W34 OEM-B74-17 · VVT-i OCV - (OCV-) SPEEDUINO-A-15 · Proto area 2 (fan) — 0.5 mm² (≈20 AWG) — — — × W35 OEM-B74-18 · VVT-i OCV + (OCV+) SPEEDUINO-A-36 · Idle 2 (3-wire idle) — 0.5 mm² (≈20 AWG) — — — × W36 OEM-B74-19 · ETCS-i clutch - (CL-) SPEEDUINO-A-35 · Boost — 0.5 mm² (≈20 AWG) — — — × W37 OEM-B74-20 · ETCS-i clutch + (CL+) SPEEDUINO-A-37 · PWM idle — 0.5 mm² (≈20 AWG) — — — × W38 OEM-B75-9 · Manifold pressure (PIM) SPEEDUINO-A-11 · MAP sensor (0-5V) — 0.5 mm² (≈20 AWG) — — — × W39 OEM-B75-15 · Accelerator pedal 1 (VPA) SPEEDUINO-A-22 · TPS input — 0.5 mm² (≈20 AWG) — — — × W40 OEM-B75-14 · Coolant temperature (THW) SPEEDUINO-A-19 · Coolant temp (CLT) — 0.5 mm² (≈20 AWG) — — — × W41 OEM-B77-13 · A/C clutch relay (ACMG) SPEEDUINO-A-16 · Proto area 3 (fuel pump) — 0.5 mm² (≈20 AWG) — — — × W42 OEM-B78-10 · EFI main relay control (M-REL) SPEEDUINO-A-38 · VVT — 0.5 mm² (≈20 AWG) — — — × W43 OEM-B77-20 · Tachometer output (TACH) SPEEDUINO-A-17 · Proto area 4 (tachometer) — 0.5 mm² (≈20 AWG) — — — × W44 OEM-B75-12 · O2 sensor (OX) SPEEDUINO-A-21 · O2 sensor — 0.5 mm² (≈20 AWG) — — — × W45 OEM-B75-22 · Intake air temperature (THA) SPEEDUINO-A-20 · Inlet air temp (IAT) — 0.5 mm² (≈20 AWG) — — — × W46 OEM-B77-25 · No.1 speed sensor (SPD) SPEEDUINO-A-14 · Proto area 1 (flex fuel) — 0.5 mm² (≈20 AWG) — — — × W47 OEM-B76-11 · No.2 speed sensor return (SP2-) SPEEDUINO-A-18 · Proto area 5 (clutch) — 0.5 mm² (≈20 AWG) — — — ×