It is just the wiring for the light on your shifter so you can see which gear you are in when its dark. I just unplugged mine and left it there when I did my swap
let me know if you have any other questions about the swap, its pretty straight forward though
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NMRA O/C 9516
NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft
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