Looking to clarify few ECU pins - charging system? what kind of IAC?

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Old Oct 2, 2021 | 07:07 AM
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Default Looking to clarify few ECU pins - charging system? what kind of IAC?

I am looking to standalone a 2003 Honda Element with rusEFI Proteus

I am using https://raw.githubusercontent.com/wi...lement-ecu.png wiring diagram and that leaves a few questions

1) what kind of IAC valve is this with three wires? is that a solenoid or not? usually solenoids have only two wires. why

2) B10 B13 B18 which one does what for charting system? I've seen single-wire alternator field control but here there are three wires which one does what? Looks like one is alternator light on the dash, another one is alternator control by ECU. Third one could be some sort of feedback from alternator I do not care about? but which one is which?
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