Adding Park Assist Pilot

[IMAY2023]

   

I removed that plug, figured there was less chance I’d break it that way. 

My wiring doesn’t even match the “remove” part of the guide. 

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That's because you are comparing the wrong diagram to the connector.  The diagram you posted represents the brown connector (rear sensors) 
The enclosed image is for green connector. front sensors. 
Besides, you do not need to remove, you need to add two wires to each connector coming from each new sensor.