Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
Ok let me measure the voltage on pin 2. I'll see if I can manage to log the bypass from the ecu to match up.
I can also just disconnect pin one to see what happens.
Do you know what the corresponding pins are on the ECU? Otherwise I'll test continuity of whatever color wires I find.
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