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Where should I run the wire for the boost solenoid

Have the conversion harness just wanted to know where to put the wire for the boost solenoid?

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Wiring the Hondata Boost Control Solenoid

The solenoid has two wires, with no polarity (it does not matter which wire is used for each connection):

  • One wire should be connected to the ECU pin B21 (which normally runs the purge control solenoid on the throttle body).
  • One wire should be connected to +12V switched power via a 10A fuse.


  • Do not use a relay between the ECU and solenoid.
  • High current solenoids could damage the ECU.

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