engie harness swap

this single purple wire i believe is for the battery and the big plug i have no idea whats it for due to my body on the passenger side has only 2 plugs that are pluged up. so could someone let me know if i was right about the single purple wire and please tell me what is the big plug for. thanks
looks like the starter trigger wire (41) and c100 (45)
I also do not believe you can just connect the plugs, and have everything work correct, you need to verify the pinouts for each. (10 pin connector that is connected, H and J are the same, for both LS1 and LT1/V6 cars, for the high and low speed fan ground circuits)
Ryan
Ryan
I also do not believe you can just connect the plugs, and have everything work correct, you need to verify the pinouts for each. (10 pin connector that is connected, H and J are the same, for both LS1 and LT1/V6 cars, for the high and low speed fan ground circuits)
Ryan
Ryan
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ok but my car didnt come with a LT1 it was a v6 3800 and your right i am gonna have to pull it back out and im doing it as we speak.
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