Horn Range

Part No Image Description Nett £ View / Buy link
AMPSAHB112 image of 12 volt high tone horn 12v High Note Car Horn £9.29 each view product details link for 12v high note auto horn
AMPSAHB012 12v Low Note Vehicle Horn £9.29 each view product details link button for 12v low tone horn
AMPSAHB124 24v High Note Horn £9.90 each view product details link for 12v high tone vehicle horn
AMPSAHB024 24v Low Note Truck Horn £9.90 each view product link for 24v low note automotive horn
AMPSASW241S push button horn switch image Momentary On push button Switch with splashproof cover for use with vehicle horns fitted to Customs builds, Construction Plant & Tractors. £4.79 each view product details link for push button horn switch
AMPSASW292 momentary on switch image Momentary On push button switch for use with vehicle horns £6.88 each view product link for momentary on push button switch
COM12H image of air horns 12 Volt Twin Air Horns Kit with Compressor £39.95 each Special Order Only
COM24H image of air horns 24 Volt Twin Air Horns Kit with Compressor £44.95 each Special Order Only
MAR24H image of 24v marine sounder horns 24 volt Marine Air Horn Kit with Compressor approved for boats less than 12 metres.

Frequency 228 hertz .
Sound level 111 decibels at 30cm

£72.00 each Special Order Only

HGV Inspection Items

TM27 : Vehicle Horn
Vehicles used from 1st August 1973 must have a horn that produces a continuous or uniform sound. If the horn does not work it is a reason for MoT  test failure.

TM34 : Pressure / Vacuum Warning.
Vehicles used from 1 April 1983 can be fitted with either a visual or audible warning device to indicate low air brake pressure.

Horn electrical circuit

There are various ways to wire up a vehicle horn. Either positive or negative supply may be switched.
A common method to wire the horn on negative ground vehicles is to provide a continuous positive supply to the horn,
the negative return circuit is wired via the steering column horn button switch.
When the horn button is pressed, the negative return circuit is completed, connected to chassis ground via the steering column causing the horn to sound.