Apexi Speed Meter Basic Connection – Vehicle Harness

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The following schematic shows how to perform basic connection diagram of vehicle harness for Apexi Speed Meter installation to the Engine Control Unit (ECU).apexi speed meter basic connection harness

1. Red wire – IG Power
2. Orange Wire – Constant Power
3. Yellow Wire – RPM Signal
4. Black Wire – Ground
5. Purple Wire – Vehicle Speed Signal Input

(source: apexi.com)



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