: Three separate 16-way plugs are typically used for specific component signals and commands. 2-way connector
: The B5 is a more "complete" version, containing two additional relays that the B3 lacks. These extra relays often support features like diesel heater plugs or auxiliary fog lights. siemens bsm b3 schematic
BSM-B3 Siemens предохранители: особенности и ... - Олниса : Three separate 16-way plugs are typically used