DIY, or otherwise try Mornington BMW. Bit of a drive but they have done these installs before and will prevent any mishaps.
Theres plenty of DIY install guides floating around, took me about a day going slow and taking care, overall its an easy install, hardest is just removing/replacing the car trim. Requires a code too for the plug and play kit.
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2020 MY21 BMW M2 Competition 6MT | Black Sapphire
OLD 2010 BMW 135i M Sport 6MT | Le Mans Blue
2016 BMW F15 X5 30D | Sapphire Black | Black Leather
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