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Secondary air wires?


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I have a 09 470 with 73k.  Had the secondary air issue replaced valves the pump and the catalytic converters.  After a few weeks the lights came back on. After checking I noticed there is a wire harness by the back of the engine close to the valves that is peeled.  After touching it the car shut off.  Started the car again and erased the codes but I believe the issue is the wires.  Anyone know what these are for or have had any issue like this before? Thanks in advance

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