All Confused HELP!!!

Secondly, this is the part of the harness which goes to the orange box? I have removed it to install the 6AL shown. My question here is do I still need the red wire and the yellow wire and where do they go? . What is the black wire? And most important, do I just bundle up the orange box plug and not worry about any of those wires? Keep in mind that I have completed the MAD voltage install and have the heavy red and black wires run directly thru the bulkhead holes I drilled.IMG_3959_4759.JPG