The horn system is supplied through the horn relay
R2
,
located in the junction unit
B1
from the direct line through
the fuse
F13
- always for
B1
- and the maxifuse
J/B1
of
B5
up to 2/99 or
B99
from 2/99.
The coil of the relay
R2
is energized
by an earth signal when one of the steering switches is closed;
these switches are connected via the clock spring to the stalk unit
H5
.
The relay thereby supplies the high tone horn
P10
and the
low tone horn
P11
.