Horn - jcb JS300 Service Manual

Tracked excavators - tier 4i isuzu engine

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Table of Contents

Section C - Electrics

Cab Systems and Lighting

Horn

The horn is operated from a switch located on the LH

joystick handle.

Wires and Connectors

K Fig 10. ( T C-134)

The LH joystick horn button (C060) is supplied with 24V

from the ignition splice S032 via pin 3 (C060 X4).

When the horn button is pressed power is connected to pin

4 (C060 X4) to the horn relay (R2) pin 88 via the cab fuse/

relay board pin 1(C100 X4).

The relay has an ignition supply from fuse 25. When the

relay energises it provides a feed to the horn at pin

1(C022). The horn earths through pin 2 to the revolver

earth point (EP03).

C129480-C5.eps

Fig 9. Harness connectors C060 and C022

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