Plymouth Valiant V-100 1965 Service – Technical Manual page 227

HORNS 8-83
To replace, depress the release on the top of the
blade assembly and slide out the rubber refill. Slide
the new rubber refill into the blade assembly until it
locks in place. Refer to the Parts List for the correct
rubber refill.
WIPER BLADE REPLACEMENT
Exposure to heat and road splash tend to harden
the rubber wiper refills. When the refills smear or in
general do not satisfactorily clean the windshield,
they should be replaced.
H O R N S
SERVICE PROCEDURES
Testing
Touch a jumper wire from relay "S" terminal to
ground. If the horn blows, difficulty is in the horn
button contact ring, the grounding of the steering
column, or in the wire from "S" terminal to the horn
button. If the horn fails to blow, connect a jumper
wire from the terminal to "H"
terminal. If horns op-
erate the relay is faulty. If horns fail to operate, diffi-
culty is in the wire to the horns, in the horns, the wire
to horn relay "B" terminal or in the grounding of the
steering column.
Adjusting
termine which horn is not operating.
(1) Disconnect the connections at each horn to de-
(2)
Remove the horn and bracket assembly.
(3) With a suitable tool (Fig. 1) turn the tone ad-
juster counter-clockwise until there is no vibration
(sound).
(4) Turn the tone adjuster clockwise, approximate-
ly ?4 turn at a time until the tone has
a
clear mellow
sound. Do not turn tone adjuster while horn is blow-
NOTE: Adiustment will only clear up sound and
cannot change horn tone frequency.
(5)
Connect a test ammeter between the positive
post of a 12 volt battery and horn terminal post. Con-
nect a jumper lead from the negative battery post to
the horn base. Clean the paint from the horn bracket
where the connection
is
made. Turn the tone adjuster
ing.
.rs
642
Fig. I-Adjusting Horn (Sparton Horn Shown)
to obtain a reading of six amperes minimum to eight
amperes maximum for Sparton horns and eight am-
peres minimum to ten amperes maximum for Presto-
lite horns, at 12.5 volts.
NOTE: Must not exceed eight amperes maximum
for Sparton horns and ten amperes maximum for
Prestolite horns.