PLEASE HELP I CAN FIND WHERE THIS OIL LINE GOES ITS DRIVING ME CRAZY

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Putting together a 2003 rxdi and I can not for the life of me find where this oil reservoir neck line goes... says under air compressor but not seeing anything there

 

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Putting together a 2003 rxdi and I can not for the life of me find where this oil reservoir neck line goes... says under air compressor but not seeing anything thereView attachment 65521