Since no public manual exists under “Siemens BSM B3,” do the following:

If you cannot find the exact schematic for your BSM B3 revision, here is how to create a functional one through reverse engineering:

Located typically near the black connector, this manages power to the fuel pump.

Imagine a stormy night where a driver is pushing their Peugeot 206 through heavy rain. Under the hood, tucked away in a protective plastic casing, sits the Siemens BSM B3