Technical 6AT-DCT e92 N54

fake335is

New Member
May 19, 2023
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Hi i am doing a DCT swap for my 6at 335i
i basically stripped everything from a 335is
but the shell. I got everything ready but im trying to figure out the wiring. i've re-pinned connectors on the top of the gearbox but i am having trouble on re-pinning these connectors here. Do i just re-pin 7/8 to 11/12? i know how to remove it just need to know where
 

fake335is

New Member
May 19, 2023
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this is an 09 335i shell btw so i believe most of the wiring is okay except for a few
 

fake335is

New Member
May 19, 2023
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Are you using this diagram?
View attachment 81137
i've swapped the whole drivetrain and engine/trans ecu, cas, key, cluster, cic idrive kit etc.. i also need help with gearbox wiring i am having trouble with some of the wiring connections from the jbox and the old 6at harness. how do i re-pin x6031 and X6021 . and i am lost regarding connection from the 6at to dct, do you just remove the old jack and then re-pin or leave it as is?
 

DirtKurt

Corporal
Nov 5, 2016
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I have an 09 as well, I did not have to move any wires in the dme box. They were already in the right locations. Underhood was just plugging in the new dct trans harness
 
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