The system for the horns is supplied through
the horn relay
T3 of the engine compartment control unit B1 from
the direct line from the battery through the fuse F10 located in
B1.
The relay coil 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 contact for the relay thus supplies
the high-tone horn
P10 and low-tone horn P11, which are connected
to earth C11.