Murphy VM-12, VM-24 User Manual

Wiring Instructions for

No
Connection

†

Terminal location may differ from shown.

Alternator

Battery
Cable

Battery

Starter

Motor

Voltmeter

(rear view†)

To Electrical
System

Lamp

ON–OFF
Switch

Light
Switch

VM-94137N

Revised 09-96

Section 65

(00-02-0209)

®

VM-12 and VM-24 Voltmeter

Please read these instructions carefully
before installing.

1. Disconnect battery ground cable.

2. Connect an 18 AWG (1.0 mm2) wire, minimum, from

the ground terminal on the back of the voltmeter to
ground (see wiring diagram). For an above ground
system connect the wire from the “–”
voltmeter to the negative (–) terminal on the battery

3. Connect an 18 AWG (1.0 mm2) wire, minimum,

from the “IGN” terminal on the ignition switch to
the “+” terminal on back of the voltmeter.

4. Connect an 18 AWG (1.0 mm2) wire, minimum,

from the instrument panel’s lighting circuit to the
illuminating lamp on back of the voltmeter (if
applicable).

5. Reconnect battery ground cable.

terminal on the

.

B

■ Frank W. Murphy Manufacturer

P.O. Box 470248; Tulsa, Oklahoma 74147; USA

tel. [phone] fax [phone]
e-mail [e-mail]

■ Frank W. Murphy Southern Division

P.O. Box 1819; Rosenberg, Texas 77471; USA
tel. [phone] fax [phone]

■ Frank W. Murphy, Ltd.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.

tel. [phone] fax [phone] tlx 477088
e-mail [e-mail]

■ Frank W. Murphy Pte., Ltd.

26 Siglap Drive; Republic of Singapore 456153
tel. [phone] fax [phone]

■ Murphek Pty., Ltd.

1620 Hume Highway; Campbellfield, Vic 3061; Australia
tel. [phone] fax [phone]

■ Murphy de México, S.A. de C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
tel. [phone] fax [phone]

■ Murphy Switch of California

P.O. Box 900788; Palmdale, California 93590; USA

tel. [phone] fax [phone]
e-mail [e-mail]

■ Frank W. Murphy France

tel. [phone] fax [phone]