Electric Symbols

Not Connected Connected

Ground

+ -Battery

Fuse

Switch(single pole single throw)

Switch(single pole double throw)

Diode

Light or Indicator

Electric Coil

85

30

86

87

87A

Relay

Horn

Buzzer

Resistor

Variable Resistor(potentiometer)

(pot)

HRGlow Plug

HHour Meter

START

RUN

OFF

GLOW PLUG

I

B

SO

ST

Ignition Switch

B

G

Alternator

B M

Starter Motor

MBlower Motor (fan)

M

Fluid Motor(washer fluid pump)

MV

Wiper Motor

M

Motor

Pressure Switch

B A

Fuel Level Sensor

BA

Air Filter Switch

+

-

C

B

A

Oil Pressure Sensor

t

Temperature Sensor

Magnetic Pickup(engine speed)