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ok. connect only white connector to TCU, and you should see red light coming from module MOST (green fiber optic) connector
if it is not coming you have to check fuse for TCU or replace module
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E81 2007 130i 6cylinder Montego blue
Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes.
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