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Extra connector plugs each side of engine

LG2325

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Can anyone please tell me what these are for and where they go?? 1x each side of engine
MY05 6cyl auto
 

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Fu Manchu

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o2 sensors for the pre cat sensors.
 

Aus78Formula

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The exhaust down pipes before the cats, welded bungs where o2 sensors with harness thread in.
 

LG2325

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Iv connected them there a smaller plug this plug comes from coil wire harness I'll try get some more pictures
 

LG2325

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The exhaust down pipes before the cats, welded bungs where o2 sensors with harness thread in.
The plugs for O2 sensors is on transmission harness. These two are on the coil harness
 

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No. The connections for the post cat o2 sensors are on the trans harness.
 

Fu Manchu

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Pre cats are on the coil harness.
2FD98D47-A652-423A-83AF-12630C50F346.jpeg

You can see the pre cat sensor bottom right. It’s loom goes up attached to the block with the clip. The plug you have mounts to the coil harness housing for the sensor loom.
 
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