Inputs:
- ignition (rpm signal)
- pressure switch, the knock control isn't active at very low loads,
that is below 0.3 bar vacuum.
- knock sensor and its shielding. It is located where no man has seen before
(or at least not after the assembly...), between the intake manifold and oil
filter.
- supply voltage and ground
Outputs:
- two signals to igniter, to allow ignition timing control (a hefty retard
at the presence of knock).
- signal to combination meter, presumably for a warning light. I will
try this one soon.
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