Thread: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
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Old 06-09-2017, 04:04 PM
Richard L Richard L is offline
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Default Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
I think it may work.

You need apply a 5V bias at pin 2 or disconnect pin 1. Need to experiment.
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