Power Supply (+B Circuit)

Positive current is supplied from battery 1 to terminal 30 on ignition switch 20 via distribution block 75 and crimped connection J18.

When the key is inserted in the ignition switch, a connection is made between terminals 30 and B. Current is supplied from terminal B to:
^ Pin 3 of the seat-belt/ignition key warning relay.
^ Pin 9 of the control module for anti-theft alarm with immobilizer 583.