We in the uk dont have the in-line surge protector loom (box) so I cant say for sure, the surge box was mostly used in the USA not Europe as BMW USA were sick of replacing nav units when the power was incorrectly disconnected by service departments and garages that did not follow the power down procedure.
The in-line surge protector loom was mostly on mk2 and mk3 units too as the mk4 copes better.
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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.
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