Apexi Speed Meter Basic Connection – Vehicle Harness
Sponsored LinksThe following schematic shows how to perform basic connection diagram of vehicle harness for Apexi Speed Meter installation to the Engine Control Unit (ECU).
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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