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# What do the numbers on a wiring diagram mean?

## What do the numbers on a wiring diagram mean?

Reading A Wiring Diagram. Wiring diagrams were traditionally printed in book form, diagrams are big as you know, to fit them all on one page would make them unreadable. The solution – a number at the end of each circuit indicated the page on which the rest of the circuit diagram was continued.

What is 31 on a wiring diagram?

Number 31= chassis ground connections. Number 50= power when the ignition switch is turned to START. A “suffix” is sometimes added to the number to distinguish any separate parts of a circuit.

### Where are the tags on a wiring diagram?

– Each of the wires in the wiring diagram has a tag number. These tags can be found in the panel as well. – Using the page numbers and the sections, in the wiring diagram, you can easily follow the wires and see where each wire is coming from. That’s it for this article!

How to read and understand a wiring diagram?

1 Recognize Wiring Diagram Symbols To read a wiring diagram, first, you have to know what fundamental elements are included in a wiring diagram, and which pictorial symbols are 2 Line Junction A line represents a wire. Wires are used to connect the components. 3 Types of Connections

#### How to identify the color of a wiring number?

Circuit 5 is BLUE, which means circuit 11 is BLUE. What color is circuit #20? Divide the number 20 by 6. The answer is 3 with a remainder of 2. Use the remainder of 2 as your reference and find what color circuit 2 is.

What are the column numbers in a wiring diagram?

Actually, these are the column numbers and they have divided each page of this drawing to 10 columns. As you see, there are some devices in each column and we can use these column numbers in combination with the page number to address different devices, contacts, terminal blocks, and so on, in other pages.

## What do the numbers mean on a wiring diagram?

Connector numbers enclosed by frame are indicated with the connector symbols at the lower part of the page. Connectornumbersnotenclosedby a frame indicate components which are integrated with the harness. Indicates harness junction point No. for another system.

Do you need a wiring diagram for a car?

Before we begin please let me tell you what a wiring diagram won’t do. Automotive wire diagrams don’t show the actual position of parts or the physical appearance of the components. Standard wire schematics don’t reveal the length of conductor wire that runs between the particular components shown.

### What are the symbols on a car wiring schematic?

There are electrical symbols posted on the schematic that will indicate the color of the wire, its thickness or size and other important details about that particular circuit such as connector locations. Identifying the color of the wire is important for accurate diagnosis.

How can you tell the color of a wire?

WIRE CODE IDENTIFICATION Each wire shown in the diagrams contains a code (Fig. 1) which identifies the main circuit, part of the main circuit, gauge of wire, and color. The color is shown as a two-letter code, which can be identified by referring to the Wire Color Code Chart (Fig. 2).

Ruth Doyle