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Electrical system 9 . 1 5
24.la Horn location on Speedfight..
.
24.1 b
. . .
Trekker
. . .
two halves of the housing together, then
remove the screws and lift the switch housing
off the handlebar (see illustration 23.2~). Note:
It
is not necessary to displace the brake lever.
5 Inspect the switch contacts (see Section 22).
If a component part is worn or broken, the
switch housing will have to be renewed as a
complete assembly.
lnstallation
6 Installation is the reverse of removal. Make
sure the wiring connector is secure and check
the operation of the switches and related
components before riding the scooter.
24
Horn
-
check and renewal
Check
1 On Speedfight models the horn is mounted
behind the right-hand front side panel; on
Trekker models the horn is mounted behind
the headlight panel; on Vivacity models the
horn is mounted behind the front panel (see
illustrations). Remove any body panels as
required for access (see Chapter 7).
2 Disconnect the wiring connectors from the
horn and ensure that the contacts are clean
and free from corrosion (see illustration).
3 To test the horn, use jumper wires to
connect one of the horn terminals to the
battery positive (+ve) terminal and the other
horn terminal to the battery negative (-ve)
terminal. If the horn sounds, check the switch
(see Section 22) and the wiring between the
25.3 Measuring the starter relay primary
resistance
24.2 Horn wiring connectors (A) and
mounting bolt (B)
switch and the horn (see the Wiring Diagrams
at the end of this Chapter).
4 If the horn doesn't sound, renew it.
Renewal
5 Remove any body panels as required for
access (see Step 1).
6 Disconnect the wiring connectors from the
horn, then unscrew the bolt securing the horn
and remove it (see illustration 24.2).
7 Install the horn and tighten the mounting
bolt securely. Connect the wiring connectors
and test the horn.
25 Starter relay
-
check and renewal
Check
1
If the starter circuit is faulty, first check the
fuse (see Section 5). Also check that the
25.4 Measuring the starter relay
secondary resistance
2 4 . 1 ~
.
. .
and Vivacity models
25.2 Pull the starter relay out of its socket
next to the battery
battery is fully-charged (see Section 3).
2 The relay is located next to the battery
holder. Disconnect the battery negative (-ve)
terminal, then pull the relay out of its socket
and test it as follows (see illustration).
3 Set a multimeter to the ohms x 1 scale and
connect it across the relay's blue wire terminal
and green wire terminal to measure the
primary resistance (see illustration).
4 Now connect the multimeter across the
relay's starter motor and battery lead terminals
to measure the secondary resistance. To
check the operation of the relay, leave the
multimeter connected, and use insulated
jumper wires to connect a fully-charged 12 volt
battery to the blue wire terminal (positive (+ve)
terminal of the battery) and the green wire
terminal (negative (-ve) terminal of the battery).
At this point the relay should be heard to click
and the multimeter read 0.1 to 0.5 ohms
(continuity) (see illustration).
5 If the relay fails either test and does not
click when voltage is applied across its
terminals, it is faulty and must be renewed.
6 If the relay is good, check the other
components in the starter circuit as described
in the relevant sections of this Chapter. If all
components are good, check the wiring
between the various components (see the
Wiring Diagrams at the end of this Chapter).
Renewal
7
Disconnect the battery negative terminal.
8 Ensure the terminals in the relay socket are
clean and free from corrosion and spray them
with electrical contact cleaner.
9 Align the relay terminals with the socket
and push it firmly into place.
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