With the lighting switch in either the side lamp or headlamp position, the interior controls and gauges are illuminated so they can be easily located during night driving. Interior illumination is not controlled by the ignition switch.
Operation
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 6 of the under seat fuse box (C0632) on an N wire. Fusible link 6 (C0571) is connected to the lighting switch (C1082 on LHD, C0041 on RHD) by an NU wire.
When the lighting switch is turned to the side or headlamp position, current flows across the switch (C1082 on LHD, C0041 on RHD) to fuse 18 and fuse 20 of the passenger compartment fuse box (C0581) on an R wire.
Interior Lamps
When the lighting switch is turned to the side or headlamp position, fuse 18 (C0581) provides a feed to the following on RO wires:
- The fuel gauge (C1055)
- The coolant temperature gauge (C1053)
- The speedometer (C1060)
- The clock (C0232)
- The LH heater control (C1199)
- The RH heater control (C1200)
All are earthed on B wires.
When the lighting switch is turned to the side or headlamp position, fuse 20 (C0581) provides a feed to the following on RO wires:
- The cigar lighter (C0074)
- The headlamp levelling switch (C0093)
- The heated front screen switch (C0131)
- The LH seat heat switch (C0250)
- The RH seat heat switch (C0249)
- The rear fog lamp switch (C0064 on LHD, C1741 on RHD)
- The RH front window switch (C0242)
- The LH front window switch (C0321)
- The heated rear window switch (C0072)
- The rear wiper switch (C0079)
- The radio/cassette player (C1315)
- The hazard warning switch (C0096).
All are earthed on B wires.