you have to be sure that MOST light coming not only from module MOST socket but from MOST plug too. And this should be with all modules on MOST ring you've got
after that you can be sure that headunit reach all modules.
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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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