Contents: 1) Contents of the electrical… ↧ 2. Conventional circuit symbols ↧ 3. Assignment of power lines (number) ↧ 4. Color coding of wire harnesses ↧ 5. How to check the connector pin… ↧
1) Contents of the electrical circuit (circuit)
|
POSITION
|
EXPLANATION
|
|
A
|
- Upper horizontal lines: power supply, power supply Power supply lines: 30, 15, 15A, 15C |
|
IN
|
- EF7, or AF3 or F2
|
|
C
|
- Connector (X101~X902)
|
|
D
|
- Wiring harness connection
|
|
E
|
Internal circuit of the component (relay) (component name, contact number) |
|
F
|
- Internal circuit of the component (controller) (component name, pin number and wiring circuit) |
|
G
|
Color of the wire harness |
|
N
|
- Ground harness connector
|
|
I
|
- Bottom horizontal line: Ground line
|
2. Conventional circuit symbols
|
CONDITIONAL
DESIGNATION
|
MEANING
|
|
X
|
Connector
|
|
E
|
Fuse in the fuse box in the engine compartment,
|
|
A
|
Fuse in the fuse box in the engine compartment, add.
|
|
F
|
Fuse in the fuse box on the instrument panel
|
|
G
|
Weight
|
|
J
|
contact block
|
3. Assignment of power lines (number)
|
Power supply number
|
Power supply status
|
|
15
|
Power from the battery (B+) with the ignition in the "ON" and "ST" positions (IGN II/III)
|
|
15A
|
Power from the battery (B+) with the ignition in the "ON" position (IGN II)
|
|
30
|
Power supply from the battery (B+) directly, regardless of the ignition position
|
|
31
|
The ground is connected to the battery (-)
|
4. Color coding of wire harnesses
|
Reduction
|
Color
|
Reduction
|
Color
|
|
BN
|
Brown
|
L-BU
|
Light blue
|
|
GN
|
Green
|
RD
|
Red
|
|
VT
|
Violet
|
BU
|
Blue
|
|
PK
|
Pink
|
YE
|
Yellow
|
|
WH
|
White
|
GY
|
Grey
|
|
Or
|
Orange
|
BK
|
Black
|
|
L-GN
|
Light green
|
5. How to check the connector pin number
The contact number is indicated according to the connector number. Example: contact number 4 of connector X405
The original article can be found on the resource: ChevyMan