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Hello I will help you with your question,
You are working on the I3 and I4 connectors shown in the diagram here (click) , I4 is the black connector and #1 is black/red stripe, #2 is yellow/red #3 is white/red and #4 is brown.
Please let me know if you have further questions
I am always glad to help, please let me know if you have further questions