Electrical Diagrams

Horn Diagrams:

Horn Components:

Locations of components

1 Battery
On the left-hand side of the engine compartment

3 Earthing point, facia
At the left-hand front speaker socket

7 Earthing point
On the left-hand wheel housing

22A Fuse board
Behind the access panel in the glove compartment

40 Horns
One behind the grille and one behind the bumper on the left-hand side

41 Horn switch
Behind the centre pad of the steering wheel

68 Horn relay
1987: in the electrical distribution box behind the glove compartment
1988: in the electrical distribution box in the engine compartment, behind the left-hand headlamp

75 Distribution block
Forward of the battery

211 Earthing point
On the gearbox

230 Distribution terminal +30
In the electrical distribution box behind the glove compartment

231 Distribution terminal +54
In the electrical distribution box behind the glove compartment

342A Fuse board
In the electrical distribution box in the engine compartment, behind the left-hand headlamp (1988)

352 Slip-ring contacts, horn
In the steering wheel hub

Operation
The horn system includes two tuned loud-tone horns, one of them high-pitched and the other low-pitched. The positive supply is taken from fuse 7 in the electrical distribution box, through the actuating coil in horn relay 68, to the horn switch on the steering wheel. When the horn switch is closed, the relay will be energized and horn 40 will be energized across fuse 21 (1987)/fuse 7 (1988) and the relay contacts.

Fault-tracing hints
The horn will not be operative until the ignition switch has been set to the drive position.

1. Check fuse 7 (1987)/fuse 21 (1988) and check that the supply to it is live.
2. Check that the relay operates by earthing terminal 85. The horn should then sound.
3. Check the wiring and the earth connections.