The circuit of the electric window system used by some vehicles is shown
in Figure 15.16. The windows will only operate when the ignition is switched
on. When the ignition is switched on, the window lift relay is energized by the
supply from fuse 18 in the passenger compartment fuse-box on the LG wire,
which passes to earth on a B wire. With the relay energized, the battery supply
from fusible link 4 on the N wire feeds the four window lift fuses on an N/U wire.
Figure 15.15 Window lift motor cable or arm-lift systems
Figure 15.16 Electric window system circuit
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