Is your BMW mirror heater not working? Might just be the connector! This 4-pin cable is designed specifically for BMW models like the E90, F10, X5, and X6 to restore your side mirror defrost function. It's a plug-and-play replacement that matches the original specs, so installation is straightforward—usually no professional help needed. The 12V compatible connector ensures stable performance, helping clear frost and fog from your mirrors for better visibility in cold or wet weather. Comes as a set of two cables (for both sides). If your mirrors aren't heating up, swapping this connector could be the fix. Keep your drives safer when the temperature drops. Simple, effective, and beats an expensive dealership repair!