W1 OEM-2-A · Power ground SP-GND-1 — 0.85 mm² (≈18 AWG) — — — × W2 OEM-2-B · Power 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-2-C · Sensor ground (E2) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W6 OEM-2-D · Sensor ground (E2) SP-0V-1 — 0.5 mm² (≈20 AWG) — — — × W7 SP-0V-1 SPEEDUINO-A-12 · Ground — 0.5 mm² (≈20 AWG) — — — × W8 SP-0V-1 SPEEDUINO-A-23 · Ground — 0.5 mm² (≈20 AWG) — — — × W9 OEM-2-K · +5V sensor supply SPEEDUINO-A-13 · 5V — 0.5 mm² (≈20 AWG) — — — × W10 OEM-2-E · Crank position (CAS NE) SPEEDUINO-A-25 · Crank input / VR1+ — 0.5 mm² (≈20 AWG) — — — × W11 OEM-2-G · Cam position (CAS G) SPEEDUINO-A-24 · Cam input / VR2+ — 0.5 mm² (≈20 AWG) — — — × W12 OEM-1-G · Ignition 1 (coils 1+4, wasted spark) SPEEDUINO-A-7 · Ignition 1 — 0.5 mm² (≈20 AWG) — — — × W13 OEM-1-H · Ignition 2 (coils 2+3, wasted spark) SPEEDUINO-A-34 · Ignition 2 — 0.5 mm² (≈20 AWG) — — — × W14 OEM-2-U · Injector 1 & 3 (batch) SPEEDUINO-A-1 · Injector 1 — 0.5 mm² (≈20 AWG) — — — × W15 OEM-2-V · Injector 2 & 4 (batch) SPEEDUINO-A-2 · Injector 2 — 0.5 mm² (≈20 AWG) — — — × W16 OEM-2-Y · Injector 3 (California sequential) SPEEDUINO-A-3 · Injector 3 — 0.5 mm² (≈20 AWG) — — — × W17 OEM-2-Z · Injector 4 (California sequential) SPEEDUINO-A-5 · Injector 4 — 0.5 mm² (≈20 AWG) — — — × W18 OEM-1-E · Malfunction indicator lamp (MIL) SPEEDUINO-A-15 · Proto area 2 (fan) — 0.5 mm² (≈20 AWG) — — — × W19 OEM-2-I · Tachometer output SPEEDUINO-A-17 · Proto area 4 (tachometer) — 0.5 mm² (≈20 AWG) — — — × W20 OEM-2-N · O2 sensor SPEEDUINO-A-21 · O2 sensor — 0.5 mm² (≈20 AWG) — — — × W21 OEM-2-Q · Coolant temperature (ECT) SPEEDUINO-A-19 · Coolant temp (CLT) — 0.5 mm² (≈20 AWG) — — — × W22 OEM-2-P · Intake air temperature (IAT) SPEEDUINO-A-20 · Inlet air temp (IAT) — 0.5 mm² (≈20 AWG) — — — × W23 OEM-1-C · Start signal SPEEDUINO-A-18 · Proto area 5 (clutch) — 0.5 mm² (≈20 AWG) — — — × W24 OEM-1-N · Wide-open throttle switch SPEEDUINO-A-14 · Proto area 1 (flex fuel) — 0.5 mm² (≈20 AWG) — — — ×