Hi, can someone help me identify what these pins are for. I cant figure them out. Both are on the passengers side of the engine when facing.

Thanks

 

 

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I have figured out the first wire at the back of the motor - its the starter signal wire (sorry that one was obvious).

The other 2 I am not so sure. Im thinking one could be the oxygen sensor, but I am not sure exactly.

At a glance that's AC related