Navigation System - Electrical: Operation: General

Feed from the positive battery terminal (C0192) is supplied to fusible link 1 and fusible link 4 of the engine compartment fuse box (C0632) on an R wire. Fusible link 4 (C0574) is connected to fuse 12 of the passenger compartment fuse box (C0587) by an NW wire. Fuse 12 (C0584) provides a constant battery feed to the following on P then PK wires:

• The head unit (C0921)
• The CD autochanger (C0941)
• The power amplifier (C0491).

Fusible link 1 is connected in series with fusible link 2, which is also located in the engine compartment fuse box. Fusible link 2 (C0571) is connected to the ignition switch (C0028) by an NR wire. When the ignition switch is turned to the 'auxiliary' position, current flows across the switch (C0028) to fuse 27 of the passenger compartment fuse box (C0588) on a PS wire.

Fuse 27 (C0580) provides an auxiliary ignition feed to the head unit (C0921) and the remote interface unit (C1897) on LGW wires.

The head unit (C0921), CD autochanger (C0941), power amplifier (C0491), and the remote interface unit (C1897) are all earthed on B wires.