While the BMW E39 was never produced as a factory convertible (it was only available as a sedan or touring/wagon), owners seeking electrical guides for "top" systems typically refer to the or are searching for technical data from related models like the E36 or E46. Electrical Schema Overview for E39 Roof Systems
You absolutely need the schéma électrique . You cannot fix an E39 without it. For repair: You also need a thermal camera (to find hot relays) and a good ground jumper . schema electrique bmw e39 top
For a full car diagnosis, you need the “top” overview. The E39 is divided into functional groups. Here is what a professional will show you for the following groups: While the BMW E39 was never produced as
: Hidden behind the glove box; handles central locking, power windows, and wipers. For repair: You also need a thermal camera
The original BMW TIS (now available as legacy software on DVD or online archives) contains the official wiring diagrams. These are vector-based, zoomable, and include full component locations.