Defender vehicles are fitted with one or two horns (dependent on market configuration), one mounted behind each headlamp. The horn(s) are operated by pressing the end of the direction indicator switch, and are not dependent on ignition switch position.
Operation
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 1 of the under seat fuse box (C0632) on an N wire. Fusible link 1 is connected in series with fuse 3, which is also located in the under seat fuse box. Fuse 3 (C0572) provides a constant battery feed to the column switch (C1739 on LHD, C1042 on RHD) on an NP wire.
Horns
The horn switch is integral with the column switch. When the horn switch is pressed, current flows across the closed switch contacts (C1739 on LHD, C1042 on RHD) to the LH horn (C0003) and the RH horn (C0004) on PB wires. The horns are earthed on B wires.